Physics MCQs

1) In Michelson’s  interferometer, if the movable mirror is moved a distance of ⋋/4, the path difference between the two interfering waves changes by

a)    ⋋/4

b)   ⋋/2

c)    ⋋

d)   3⋋/2

2) In a string, the fundamental frequency for standing waves is

a)    v/ℓ

b)   ℓ/v

c)    2ℓ/v

d)   v/2ℓ

3) The distance between two consecutive anti-nodes is

a)    2⋋

b)   ⋋

c)    ⋋/2

d)   ⋋/4

1. b

2.d

3.c