AP ECET 2023 Syllabus for Physics

ANNEXURE - I
PHYSICS
(Common Syllabus for all Diploma Holders in Engineering)

Unit-1:
Units and dimensions: Physical quantity-fundamental and derived physical quantities-units-
fundamental and derived units-SI units-multiples and sub-multiples in SIunits-advantages of
SI units-dimensions and dimensional formulae-dimensionless quantities- applications and
limitations of dimensional analysis-problems.

Unit-2: Elements of vectors:
Scalar and vector quantities-examples–graphical representation of a vector-types of vectors-
addition and subtraction of vectors-triangle law-parallelogram law and its cases-polygon law-
resolution of a vector-unit vectors (i, j, k)-dot product and cross product of two vectors-
characteristics of dot and cross products-examples-problems.

Unit-3: Kinematics and Friction
Equations of motion-acceleration due to gravity-equations of motion under gravity-
expressions for maximum height, time of ascent, time of descent, time of flight, velocity on
reaching the point of projection-motion of a body projected from the top of a tower-projectile
motion-examples-horizontal and oblique projections-expressions for maximum height, time
of ascent, time of flight, horizontal range, magnitude and direction of resultant velocity-
problems.
Friction-normal reaction-laws of friction-coefficients of friction-angle of friction-methods of
reducing friction-advantages and disadvantages of friction-motion of a body over a smooth
inclined plane and a rough inclined plane–problems.

Unit-4: Work, Power and Energy
Work, power and energy-definitions and units-potential and kinetic energies-examples and
expressions-law of conservation of energy-problems .

Unit-5: Simple harmonic motion and acoustics
Definition-conditions of SHM-examples of SHM-expressions for displacement, velocity,
acceleration, time period, frequency and phase of SHM-time period of a simple pendulum-
seconds pendulum-problems. Sound-musical sound and noise-noise pollution-Effects and
methods of control of Noise Pollution-Beats and echoe-problems-Doppler effect – Explanation,
cases and Applications Acoustics of buildings-Reverberation-Sabines’ formula- characteristics
of a good building-problems.

Unit:6: Heat and Thermodynamics
Expansion of gases-Boyle’s law-Absolute scale of temperature-charle’s laws-Ideal gas
equation-Universal gas constant and its value-SI Units-problems-external work done by a gas-
isothermal process-adiabatic process-first law of thermodynamics and its applications to
isothermal process and adiabatic process-two specific heats of a gas-relation between Cp and
Cv-problems-second law of thermodynamics and its applications.

Unit:7 Modern Physics
Photoelectric effect – explanation and its laws-applications of photoelectric effect (photocell)
– critical angle and total internal reflection – optical fibers - principle, working , types and
applications-concept of super conductivity – its properties and applications.

ANNEXURE - II
Number of Questions to be Set Unit Wise (TOTAL 25)

UNIT NO TOPICS MARKS

I Units and Dimensions 02

II Elements of Vectors 02

III Kinematics and Friction 06

IV Work, Power and Energy 03

V Simple Harmonic Motion and Acoustics 05

VI Heat and Thermodynamics 05

VII Modern Physics 02

Total 25

ANNEXURE - III
MODEL QUESTIONS FOR PHYSICS

1. If young’s modulus ‘Y’, surface tension ‘S’ and velocity ‘V’ are chosen as fundamental
quantities, the dimensional formula for force is
2. Y-5V-4S6
3. Y-3V5S5
4. Y-5V-4S5
5. Y-3V-4S6
2. A ballon moves up with constant velocity 10m/s. An object is dropped from it when it
is at a height of 100 m above the ground. The distance between the object and the ballon
after 5 sec is (g=10m/s2)
1. 120 m
2. 125 m
3. 100 m
4. 150 m
3. The time period of an oscillating simple pendulum is ‘T’. If its length is increased by
5 cm then the time period is ‘T1’ and the time period is ‘T2’ if the length is reduced by
5 cm. The relationship among T, T1, T2
1. T2 = T12+T22
2. T2/2 = T12+T22
3. 2T2 = T12+T22
4. 3T2 = T12+T22
4. A gas is heated through 4 K in a closed vessel. If its pressure is increased by 0.8%, the
initial temperature of the gas is
1. 227 K
2. 454 K
3. 454 oC
4. 227 oC
5. If light travels through two media with velocities 2.5 x 108 m/s and 2 x 108 m/s
respectively, the critical angle for the combination of the two media is
1. Sin-1(4/5)
2. Sin-1(3/5)
3. Sin-1(2/5)
4. Sin-1(1/5)