Physics Quiz For SSC CGL SSC CHSl And Railway Exams

1. If the earth were to stop rotating the value of ‘g’
A) Increases
B) Decreases
C) Remains unchanged
D) None of these

2. If we move from the equator to a pole the value og ‘g’
A) Increases
B) Decreases
C) Remains unchanged
D) None of these

3. The escape velocity of a particle of mass m varies as
A) m0
B) m
C) m2
D) m-1
4. If the earths were to skin faster, acceleration due to gravity at the poles
A) Increases
B) Decreases
C) Remains unchanged
D) None of these

5. The total energy of a particle vibrating in S.H.M. is propotional to the squre of its
A) Velocity
B) Acceleration
C) Amplitude
D) None of these

6. The young’s modulus for perfectly rigid body is
A) 0
B) 1
C) Infinite
D) None

7. The Modulus of rigidity of a liquid is
A) 0
B) 1
C) Infinite
D) None

8. Which of the following is most elastic
A) Rubber
B) Wet clay
C) Steel
D) Plastic

9. The operating principle of a hydraulic press is
A) Pascal’s principle
B) Archimedes principle
C) Boyle’s law
D) Newton’s law of gravitation

10. A floating body always displaces liquid equal to its own
A) Mass
B) Volume
C) Weight
D) None

11. The shape of rain drop is spherical due to
A) Viscosity
B) Surface tension
C) Elasticity
D) Gravitation

12. Bernoulli’s theorem is based on the conversation is
A) Mass
B) Momentum
C) Energy
D) All of the above

13. Bernoulli’s theorem is applicable to
A) Flow of liquids
B) Viscosity
C) Surface tension
D) Static fluid pressure

14. ’Dynamic lift’ is related to
A) Bernoulli’s theorem
B) Archimedes principle
C) Equation of continuity
D) Pascal’s law

15. A liquid will not wet the surface of solid if the angle of contact is
A) Acute
B) Obtuse
C) Zero
D) 1

16. Meniscus of mercury in a capillary is
A) Concave
B) Convex
C) Plane
D) Cylindrical

17. with the rise of temperature the surface tension of a liquid
A) Increases
B) Decreases
C) Remains unchanged
D) None of these

18. Kilowatt is a unit to measure
A) Work
B) Power
C) Electricity
D) Current

19. Light year is measurement of
A) Speed of aeroplanes
B) Speed of rockets
C) Stellar distance
D) Speed of light

20. Very small time intervals can be accurately measured by
A) White dwarf
B) Quartz clocks
C) Atomic clocks
D) Pulsars

21. A deep sea diver may hurt his ear drum during diving because of
A) Lack of oxygen
B) High atmospheric pressure
C) High water pressure
D) All of the above

22. Fat can be separated from milk in a cream separator because of
A) Cohesive force
B) Gravitational force
C) Centripetal force
D) Centrifugal force

23. When body is immersed in a liquid it force acting on it is
A) Upthrust
B) Weight
C) Mass
D) Both A and B

24. A Liquid drop tends to assume a spherical shape because of
A) Surface tension
B) Viscous force
C) Gravitational force
D) Elastic force