CSS Physics MCQs 2017
CSS Physics 2017 MCQs – Paper I
Q1: Which of the following is a non-conservative force?
A: Gravitational force
B: Electric force
C: Frictional force
D: Elastic spring force
Q2: The cross product of two vectors A and B points in a direction:
A: Parallel to A
B: Parallel to B
C: Perpendicular to the plane containing A and B
D: Opposite to A
Q3: One radian is equal to approximately:
A: 45.0$^\\circ$
B: 57.3$^\\circ$
C: 90.0$^\\circ$
D: 180.0$^\\circ$
Q4: The moment of inertia of a solid sphere of mass $M$ and radius $R$ about its diameter is:
A: 2/5 MR^2
B: 1/2 MR^2
C: 2/3 MR^2
D: MR^2
Q5: If the Earth shrinks to half of its present radius (mass remaining constant), the duration of the day would be:
A: 6 hours
B: 12 hours
C: 48 hours
D: 24 hours
Q6: The SI unit of viscosity is:
A: Pascal
B: Newton/meter
C: Pascal-second
D: Joule-second
Q7: The escape velocity does not depend on:
A: Mass of the planet
B: Radius of the planet
C: Mass of the body projected
D: Gravitational constant
Q8: Bernoulli’s equation is applicable to points:
A: Along a streamline of ideal fluid flow
B: In any viscous liquid
C: In turbulent flow
D: Only in static fluids
Q9: Simple Harmonic Motion (SHM) is a type of:
A: Rotational motion
B: Circular motion
C: Vibratory or Oscillatory motion
D: Random motion
Q10: The speed of sound is maximum in:
A: Air
B: Water
C: Solids (Steel)
D: Vacuum
Q11: Doppler effect applies to:
A: Sound waves only
B: Light waves only
C: Both Sound and Light waves
D: Neither
Q12: In a Michelson Interferometer, if the movable mirror is moved by a distance λ/4, the path difference generated is:
A: λ/4
B: λ/2
C: λ
D: 2λ
Q13: According to the First Law of Thermodynamics:
A: Q = ΔU + W
B: W = Q + ΔU
C: ΔU = Q + W
D: Q = W - ΔU
Q14: Entropy is a measure of:
A: Internal energy
B: Disorder of a system
C: Heat capacity
D: Work done
Q15: The efficiency of a petrol engine is usually:
A: Higher than a diesel engine
B: Lower than a diesel engine
C: Equal to a Carnot engine
D: 100%
Q16: According to Einstein’s Special Theory of Relativity, moving clocks run:
A: Faster
B: Slower (Time Dilation)
C: Backwards
D: At the same rate
Q17: The relativistic mass 𝑚 of a particle moving with velocity $v$ is given by:
A: 𝑚 = 𝑚0 /sqrt 1 - v^2/c^2
B: 𝑚 = 𝑚0 sqrt 1 - v^2/c^2
C: 𝑚 = 𝑚0 sqrt 1 - v/c
D: 𝑚 = 𝑚0
Q18: Bragg’s Law for X-ray diffraction is:
A: d sin theta = nλ
B: 2d sin theta = nλ
C: d cos theta = nλ
D: n sin theta = 2d
Q19: Light from the sun reaches the earth in approximately:
A: 5 minutes
B: 8 minutes 20 seconds
C: 10 minutes
D: 1 second
Q20: Which color of light deviates the most when passing through a prism?
A: Red
B: Green
C: Violet
D: Yellow
CSS Physics 2017 MCQs – Paper II
Q1: The SI unit of Magnetic Flux is:
A: Tesla
B: Weber
C: Gauss
D: Henry
Q2: Gauss’s Law for magnetism states that the net magnetic flux through any closed surface is:
A: μ_0
B: Infinite
C: Zero
D: q epsilon_0
Q3: The drift velocity of electrons in a conductor is of the order of:
A: 10^4 m/s (mm/s)
B: 10^6 m/s
C: Speed of light
D: 10^3 m/s
Q4: Kirchhoff’s Voltage Law (KVL) is a manifestation of the conservation of:
A: Charge
B: Energy
C: Momentum
D: Mass
Q5: A transformer is used to change:
A: Power
B: Frequency
C: Voltage
D: Resistance
Q6: The impedance ($Z$) of an RLC series circuit at resonance is equal to:
A: R (Resistance)
B: X_L
C: X_C
D: Zero
Q7: In a p-n junction diode, the depletion region is formed due to:
A: Drift of carriers
B: Diffusion of charge carriers
C: External voltage
D: Heating
Q8: The output of a NAND gate is LOW (0) only when:
A: All inputs are LOW
B: Any input is LOW
C: All inputs are HIGH
D: Any input is HIGH
Q9: The process of adding impurities to a pure semiconductor is called:
A: Mixing
B: Doping
C: Diffusing
D: Rectifying
Q10: The common-emitter current gain $\\beta$ is related to $\\alpha$ by:
A: β= α+ 1
B: β = α /(1 - α)
C: β = 1 - α
D: β = α
Q11: Photoelectric effect establishes that light:
A: Travels in waves
B: Consists of energy packets (photons)
C: Is a magnetic wave
D: Is polarized
Q12: The minimum energy required to remove an electron from a metal surface is called:
A: Stopping potential
B: Kinetic energy
C: Work Function
D: Threshold frequency
Q13: Compton shift depends on:
A: The material of the target
B: The angle of scattering
C: Intensity of radiation
D: Frequency of radiation
Q14: The half-life of a radioactive element depends on:
A: Amount of the element
B: Temperature
C: Pressure
D: Nature of the element (Disintegration constant)
Q15: Which of the following particles has the highest penetrating power?
A: Alpha particles
B: Beta particles
C: Gamma rays
D: Neutrons
Q16: Energy in the sun is produced by:
A: Nuclear Fission
B: Nuclear Fusion
C: Chemical Reaction
D: Combustion
Q17: 1 Curie is equal to:
A: 3.7 *10^10 disintegrations per second
B: 1 disintegration per second
C: 10^6 disintegrations per second
D: 3 * 10^8m/s
Q18: Heisenberg Uncertainty Principle states that it is impossible to measure simultaneously with accuracy both:
A: Mass and Energy
B: Position and Momentum
C: Charge and Velocity
D: Time and Mass
Q19: An electron volt (eV) is a unit of:
A: Potential difference
B: Energy
C: Charge
D: Power
Q20: In a Full Wave Rectifier, the ripple factor is:
A: 1.21
B: 0.48
C: 0.0
D: 1.0