Notes

# Bsc Physics Part 2 Full Book Mcqs

16: virtual displacement depend upon

a) Coordinates

b) Time

c) Both a & b

d) None

17: Routhās procedure deals with

a) Polar coordinates

b) Generalized coordinates

c) Cyclic coordinates

d) Buss

18: If direction of āFā and ārā is reversed then torque is

a) Also changed

b) Remains unchanged

c) Magnitude changes

d) None of these

19: the relativistic mechanics give the same results as classical mechanics except

a) When the bodies treated at a speed approaching a speed of light

b) When applied to atomic of the system

c) None of these

20: non conservative forces have

a) Velocity

b) Coordinates

c) Both a & b

d) None of these

21: constraint that can be express in term of coordinates and time f( r1, r2,r3,ā¦..,t)=0 are said to be

a) Holonomic

b) Non Holonomic

c) Scleronomous

d) Rheonomous

22: Rheonomous constraints have

a) Explicit time dependence

b) not Explicit time dependence

c) both Explicit time dependence

d) neither Explicit time dependence nor no Explicit time dependence

23: Scleronomous constraint have

a) Explicit time dependence

b) not Explicit time dependence

c) both Explicit time dependence

d) neither Explicit time dependence nor no Explicit time dependence

24: if the lagrangians is cyclic in qj then

a) Pj is not conserved

b) Pj is conserved

c) qj appears in lagrangians

d) The lagrangians is circular

25: when no force acting on a particle then

a) P is conserved

b) P is not conserved

c) P is zero

d) None of these

26: when a conservative force does negative work on a body the P.E of the body

a) Decrease

b) Increase

c) Remain the same

d) Decreases when force is small and increases when force is decreases

27: which of the following does not have a linear momentum?

a) An airplane at 30,000 ft

b) A neutrino

c) A speeding bullet

d) All of these

28: second law of motion describes

a) Force

b) Momentum

c) Acceleration

d) Both a & b

29: if P is the momentum of an object of mass m the expression P2

/2m has base units

identical to

a) Energy

b) Force

c) Power

d) Velocity