Wave Optics Test

Result

Wave Optics Test - 4

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Two sources of light are coherent if they have

A
same frequency and change phase randomly

B
different frequency and random phases

C
same frequency and with a constant phase relationship

D
different frequency and with a constant phase relationship

Solution

If the two sources are coherent, then the phase difference φ at any point will not change with time.
Question 2
1 / -0

Interference effects of light from two sources can be observed if

A
the sources are of different frequency and random phases

B
the sources are coherent

C
the sources are of different frequency

D
the sources are independent

Solution

If the two sources are coherent, then the phase difference φ at any point will not change with time, and we will have a stable interference pattern; i.e., the positions of maxima and minima will not change with time.
Question 3
1 / -0

If we have two coherent sources S₁ and S₂ vibrating in phase, then for an arbitrary point P constructive interference is observed whenever the path difference is

A
A fraction of a wavelength

B
An integral multiple of wavelength

C
An even multiple of wavelength

D
An odd multiple of wavelength

Solution

The two interfering wave trains reinforce each other to fulfill the condition of constructive interference.
Question 4
1 / -0

In general the term diffraction is used

A
if single source is multiplied by scalar

B
bending of waves round an obstacle

C
if two sources are added algebrically.

D
if two sources are added vectorially

Solution

The bending of waves takes place whenever the size of obstacle is comparable to wavelength of waves.
Question 5
1 / -0

Diffraction also refers to

A
the bonding of light to an obstacle

B
the bending of light in a medium

C
the bending of light around an obstacle

D
rectilinear propagation of light

Solution

Light bends when the size of obstacle is comparable to wave length of waves.