Shivaji University Entrance Exam 2020 Question Paper Physics

Shivaji University , Kolhapur
Seat Paper Code(ENT202014)
No.
M.Sc Entrance Exam , MAY-2020

58718-PHYSICS

Day And Date : Friday 20/11/2020 Total Marks : 100
Time : 15:30 To 17:00
Marks
1 The proton-proton cycle is applicable for relatively ……… stellar 1
temperature production.
A) low
B) medium
C) high
D) very high
2 In phase shift oscillator, the phase shift in each RC network is _____ 1
A) 180 degree
B) 120 degree
C) 60 degree
D) 360 degree
3 For achromatic combination, the distance between two thin lenses of same 1
material with focal length 20 cm and 15 cm should be ______.
A) 35 cm
B) 5 cm
C) 17.5 cm
D) 10 cm
4 According to Thevenin’s theorem, the entire network connected to two terminals 1
can be replaced by a single voltage source VTH ……………
A) in series with a current ITH
B) in series with a resistance RTH
C) in series with a capacitance CTH
D) None of the above
5 Gravitational potential due to point mass ‘m’ at a point P at distance ‘r’ from mass 1
is --------
A) V= -G.m/r
B) V=+Gm/r
C) V=G.m.r
D) V=G.r/m
6 The phase velocity(Vp) and group velocity(Vg) of the elastic wave are different 1
from each other in a ------- medium.
A) air medium
B) dispersive medium
C) non-dispersive medium
D) homogeneous medium
7 The lowering operative L_ = -------- 1
A) Lx + i Ly
B) Lx/ i Ly
C) Lx X i Ly
D) Lx - i Ly

8 In striping reaction the product nucleus differs from the target nucleus in ... ... 1
A) mass number
B) atomic number
C) both (A) and (B)
D) neither (A) nor (B)
9 If Q value of a nuclear reaction is positive then the reaction is ... ... 1
A) exothermic
B) endothermic
C) +Q reaction
D) Neither (A) nor (B)
10 The condition for symmetric wave function is = ---------- 1
A) i
B) -i
C) 1
D) -1
11 In monostable multivibrator when 0.01MF capacitor charges through a resistance 1
of 5Kohm ,the pulse width of output is -------------
A) 5.5 ms
B) 550 ms
C) 55 ms
D) 0.55 ms
12 When elastic wave travels through a diatomic lattice , the width of the forbidden 1
band depends upon ---------- of masses..
A) addition
B) division
C) multiplication
D) difference
13 The probability W of a state of the system is related to the entropy S of the system 1
by relation
A) S = k ln W
B) K = S ln W
C) W = k ln S
D) k = δ S ln W
14 1

15 Power of electric circuit in terms of back emf is…. 1
A) P=-e2I
B) P=-e2I2
C) P=-e I
D) P=eI
16 Cyclotron frequency ω of a charged particle moving in uniform magnetic field B is 1
…..
A) q/mB
B) qB/m
C) mB/q
D) m/qB

17 Soft superconductor observes ... ... ... 1
A) Silksbee's rule
B) Meissner effect
C) both (A) and (B)
D) Zener effect
18 According to Fick, the diffusion phenomenon is analogous to 1
A) electrical resistivity
B) electrical conductivity
C) both (A) and (B)
D) neither (A) nor (B)
19 When deuteron strikes the target nucleus and neutron is absorbed by target and 1
proton is ejected, then such nuclear reaction is ……………….
A) elastic nuclear collision
B) scattering reaction
C) stripping reaction
D) pick up reaction
20 In internal conversion, emission of ……………. takes place. 1
A) proton
B) positron
C) electron
D) neutron
21 In Wilson cloud chamber, a charged particle passing through a gas ………… 1
A) produces positrons
B) produces nuclear reactions
C) makes the gas radioactive
D) ionizes the gas
22 At absolute zero of temperature when E>>Ef , the probability of quantum state 1
occupied by the free electron F(E)=-------
A) 0
B) 1
C) -1
D) 0.5
23 The Larmour frequency of precession is given by…… 1
A) eh/4πm
B) Bh/4πm
C) eh/8πm
D) eh/4π
24 The two classes of hadrons are 1
A) leptons and mesons
B) leptons and baryons
C) mesons and baryons
D) leptons and bosons
25 Displacement current comes into picture, when _______ changes with time 1
A) Electric field
B) Magnetic field
C) Both electric and magnetic fields
D) Neither electric nor magnetic fields

26 Sputtering yield is …………. 1
A) less than unity
B) greater than unity
C) equal to infinity
D) equal to unity
27 If the wind turbine has the efficiency of 40% and output power of the turbine is 1
400W then the power of incident wind is ... ...
A) 2 KWatt
B) 1 KWatt
C) 100 Watt
D) 10 Watt
28 ... ... ... process is the top down approach process for the synthesis of 1
nanomaterials.
A) ball milling
B) sputtering
C) colloidal route
D) chemical vapor deposition
29 The logarithm of diffusivity (D) is ... ... ... temperature. 1
A) inversely proportional to
B) directly proportional to
C) equal to
D) independent of
30 Cyclotron is an accelerator working on the principle of ... ... 1
A) Fixed frequency magnetic resonance
B) Variable frequency magnetic resonance
C) Fixed frequency electronic resonance
D) Variable frequency electronic resonance
31 The time for which the GM counter becomes passive after discharge is called ... ... 1
A) dead time
B) recovery time
C) time of discharge
D) none of these
32 Betatron works on the principle of ... ... . 1
A) Transformer
B) Induction coil
C) Phase stability
D) Magnetic resonance
33 For anti-stokes line the Raman shift is ……… 1
A) positive
B) zero
C) both positive and negative
D) negative
34 In the spectra of alkali metals, the doublet separation …… with increase in atomic 1
number.
A) remains constant
B) decreases
C) increases
D) is independent

35 The parity of the wave function is odd when ------- 1
A) ψ(-x)= ψ(x)
B) ψ(-x) = - ψ(x)
C) ψ(-x) = x
D) ψ(-x) = x2
36 Atwood’s machine is an example of an conservative system with ----- 1
constraints.
A) holonomic, rheonomous
B) holonomic, scleronomous
C) holonomic, non holonomic
D) none of these
37 The unscattered lines in Raman spectra are called --------- lines 1
A) Raman
B) Rayleigh
C) Stoke`s
D) Starks
38 1

39 The system is called as monogenic, if all the forces of a system are generated 1
from ----- function.
A) double
B) triple
C) single
D) none of these
40 1

41 All frames of reference rotating with respect to a fixed frame are -----------------. 1
A) inertial
B) non-inertial
C) located to a point
D) both inertial and non-inertial
42 In case of step potential, reflection coefficient is given by ________ 1
A) R = 1 + T
B) R = 1 - T
C) R = T - 1
D) R = 0

43 ------------- of a particle is the same in fixed and rotating system 1
A) Angular velocity
B) Angular acceleration
C) Angular momentum
D) Linear displacement
44 For orbital quantum number l=2 magnetic orbital quantum number have ____ 1
values.
A) two
B) five
C) six
D) eight
45 Energy levels of particle enclosed within one dimensional rigid box are ________. 1
A) continuous
B) degenerate
C) non degenerate
D) zero
46 For orthogonal curvilinear coordinate system, coordinate surfaces are _________ 1
A) mutually perpendicular to each other everywhere
B) mutually parallel to each other everywhere
C) not in general curved
D) not present
47 Rayleigh Jean’s formula agrees well with the experimental results at …... 1
frequency.
A) all
B) shorter
C) longer
D) very large
48 The position of particle can be precisely specified if its wave group is……… 1
A) narrow
B) wide
C) well defined
D) specific
49 K line in the X-ray spectrum is the result of electron transition from orbit 1
corresponding to n = ……… to the orbit n = 1.
A) 1
B) 2
C) 3
D) 4
50 The group velocity of matter wave is ……… particle velocity. 1
A) equal to
B) not equal to
C) less than
D) nearly equal to
51 Lorentz transformation equations are reduced to Galilean transformations 1
when……..
A) v > c
B) v < c
C) v << c
D) v = c

52 Zeeman shift dλ in normal Zeeman effect is givan by …… 1
A) ± λ2e/4πmc
B) ± λeB/4πmc
C) ± λ2eB/4πm
D) ± λ2eB/4πmc
53 For dispersion medium, the group velocity Vg and phase velocity Vp of de- 1
broglie wave is such that
A) Vg > Vp
B) Vg = Vp
C) Vg < Vp
D) Vg =2Vp
54 Image due to zone plate is obtained by -------- of light. 1
A) diffraction
B) interference
C) polarization
D) lightning
55 For just resolution of two nearly equal wavelengths, the angular separation 1
between their principal maxima should be equal to ........
A) angular width
B) half the angular width
C) double the angular width
D) quarter the angular width
56 Principal planes are the cardinal planes of unit positive ....... 1
A) angular magnification
B) lateral magnification
C) longitudinal magnification
D) angular and lateral magnification
57 The Carbon-nitrogen cycle is applicable for relatively ……… stellar 1
temperature production .
A) low
B) medium
C) high
D) very high
58 For most common UJTs, typical values of η usually lies in the range -------- 1
A) 0.5 and 0.8
B) 0 and 1
C) -1 and 1
D) 0.1 and 0.3
59 In a JFET, pinch off means ______ 1
A) current off
B) voltage off
C) current maximum
D) voltage maximum
60 _____ flip-flop is a refinement of R-S flip-flop. 1
A) J-K
B) D
C) T
D) All

61 Tank circuit produces _______ oscillations. 1
A) damped
B) Undamped
C) sinusoidal
D) square
62 If the height of the liquid in a rotation viscometer is increased , the rotational torque 1
will_______
A) increase
B) decrease
C) remain unchanged
D) vanish
63 When vertically hung flat spiral spring is loaded from the lower end to bring about 1
extension x the C.G. of the spring_______
A) lowers by x/4
B) rises by x/2
C) Lowers by x
D) Lowers by x/2
64 In a purely inductive circuit, the phase of the alternating current, over the applied 1
e.m.f. is …………….
A) lagging by 90 degree
B) leading by 90 degree
C) out of phase
D) equal to 90 degree
65 The molecules having separated centers of gravity of protons and electrons are 1
called-----
A) non-polar
B) polar
C) semipolar
D) circular
66 Displacement current through Copper wire at frequency 50 Hz is _________ 1
A) very greater than conduction current
B) equal to conduction current
C) negligible as compared with conduction current
D) almost infinite
67 Length contraction of moving object is observed in ……. 1
A) Direction of motion
B) Direction perpendicular to the motion
C) All directions
D) Both (a) and (b)
68 Transverse wave nature of light is confirmed by .... phenomenon. 1
A) reflection
B) diffraction
C) interference
D) polarization
69 What does remain constant during an adiabatic change? 1
A) Internal energy
B) Heat
C) Temperature
D) Pressure

70 If dispersive power of crown glass is 0.024 then longitudinal chromatic aberration 1
produced by crown glass lens of focal length 30 cm is ______
A) 0.72 cm
B) 0.008 cm
C) 1250 cm
D) 30 cm
71 The property of liquid by virtue of which it appose the relative motion between its 1
adjacent layers is called ------- of the liquid.
A) surface tension
B) density
C) resistivity
D) viscosity
72 The gravitational field at any point in the interior of the shell due to the shell is ----- 1
A) maximum
B) zero
C) minimum
D) infinite
73 Water flows through a pipe of varying cross section. Its speed is 50 cm/sec where 1
the cross section is 100 sq.cm then the speed of water through cross section 25
sq.cm is -------cm/sec.
A) 20
B) 200
C) 2000
D) 2
74 If T is the surface tension of a liquid then the excess pressure inside the liquid 1
drop of radius r is -------
A) 2T/r
B) 4T/r
C) r/2T
D) T/r
75 If operators A and B are two operators and [A, B] commutes with Hamiltonian 1
operator H then
A) A commutes with H but B doesn't commute with H
B) B commutes with H but A doesn't commute with H
C) Both A and B commute with H
D) Both A and B doesn't commute with H
76 The interplaner distance for (221) plane in case of cubic lattice is …………. 1
A) a/5
B) a/9
C) a/3
D) a/6
77 A solar PV panel has 70 cells and 100 modules with each solar cell has 0.4W 1
power output. The output power of the PV panel is ... ... ...
A) 2.8 KW
B) 280 Watt
C) 28 Watt
D) 2000 Watt

78 In weak magnetic field D2 line of sodium spectrum splits into --------- lines 1
A) 8
B) 4
C) 2
D) 6
79 Dextro-rotatory substances are those which rotate the plane of polarization in ....... 1
direction when seen in the source
A) anticlockwise
B) clockwise
C) left
D) random
80 The cyclones formed in southern hemisphere are --------- 1
A) random
B) clockwise
C) anticlockwise
D) opposite
81 A rigid body can have two types of motion ---------------- 1
A) translation and vibration
B) rotation and vibration
C) translation and rotational
D) translational and spin
82 The collection of a large number of macroscopically identical but essentially 1
independent systems having the same energy E volume V and number of particles
N is called .... ensemble.
A) canonical
B) microcanonical
C) macrocanonical
D) megacanonical
83 1

84 The process of raising the atoms from the lower energy state to higher energy 1
state in laser formation is called ....
A) pumping
B) optical pumping
C) electrical pumping
D) chemical pumping
85 By Lanchester’s rule , the relation between the precessional torque τ1 , the 1
gravitational torque τ2 and the centripetal torque τ3 is ________
A) τ2+ τ1 = τ3
B) τ2+ τ3 = τ1
C) τ1- τ2 = τ3
D) τ2 - τ3= τ1

86 Which of the following is not the expression for the efficiency of Carnot engine? 1
A) (Q1 – Q2) / Q1
B) (T1 – T2) / T1
C) (P1 – P2)/ P1
D) (V1 – V2) / V1
87 Dispersive power of material is always _______ quantity. 1
A) Zero
B) Positive
C) Negative
D) Infinite
88 Oscillator with frequency f=50 Hz and relaxation time τ=2 s has quality factor (Q)= 1
_______.
A) 100
B) 0.06284
C) 25
D) 628.4
89 Consider the following statements. Find which is correct. (A)An emf can be 1
induced by moving a conductor in a magnetic field. (B)An emf can be induced by
changing the magnetic field.
A) Both A and B are true.
B) A is true but B is false.
C) B is true but A is false.
D) Both A and B are false.
90 The ratio of small change in the drain current to the small change in the gate 1
current at a constant drain voltage is called -----------
A) amplification factor (μ)
B) Ac drain resistance (rd)
C) DC drain resistance (RDS)
D) Mutual conductance (gm)
91 If there are no free charges and free current, Maxwell’s equations are _________. 1
A) Not applicable
B) Applicable
C) Difficult to solve
D) Not in existence
92 According to Neumann’s formula, mutual inductance…..with increase of 1
separation between the loops.
A) remains unchanged
B) decreases
C) increases
D) varies irregularly
93 The field particles in electromagnetic force is ... ... 1
A) muon
B) pion
C) photon
D) positron
94 Fermi and Dirac modified Bose Einstein statistics on the basis of ...... 1
A) equipartition of energy
B) quantum theory
C) pauli’s exclusion principle
D) classical theory

95 At absolute zero temperature, the total probability of state of the system 1
W=________
A) 0
B) 1
C) -1
D) none of these
96 In nuclear chain reaction, when the production factor K > 1,the mass is 1
said to be…..
A) critical
B) subcritical
C) supercritical
D) normal
97 If operational amplifier has CMRR of 90 dB , if its differential voltage gain is 1
2,00,000. Calculate its common mode gain. -------------
A) 6.33
B) 6.9
C) 0.95
D) 9.5
98 For phase shift oscillator circuit, if R1 = R2 = R3 = 10KΩ and C1= C2 = C3= 1
0.001μf, then frequency of its oscillation is ---------
A) 65kHz
B) 6.5kHz
C) 0.65kHz
D) 75 kHz
99 The time during which the sound persists in a hall until it just becomes inaudible, 1
after the source of sound stops sounding is called _______
A) periodic time
B) dead time
C) reverberation time
D) acoustic time
100 According to kinetic theory, average kinetic energy of a gas molecule is directly 1
proportional to -------
A) Square root of temperature
B) Temperature
C) Square of temperature
D) None of these