Physics MCQs

1) The path difference and phase difference are related to each other as

a)    Phase difference=2πx path difference

b)   Phase difference=2π/⋋x path difference

c)    Phase difference=⋋/2π path difference

d)   Phase difference=2⋋/πx path difference

2) In case of destructive interference of two waves, the amplitude of the resultant wave will be_________ either of two waves.

a)    Greater than

b)   Smaller than

c)    Equal to

d)   None of these

3) The distance covered by the wave in one second is

a)    Wave number

b)   Wavelength

c)    Frequency

d)   Wave speed

1.B

2.B

3.D