Wave Optics - Online Test

Q1. Two sources of light are coherent if they have
Answer : Option A
Explaination / Solution:
No Explaination.


Q2. Interference effects of light from two sources can be observed if
Answer : Option C
Explaination / 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.

Q3. If we have two coherent sources  vibrating in phase, then for an arbitrary point P constructive interference is observed whenever the path difference is
Answer : Option B
Explaination / Solution:
No Explaination.


Q4.
If we have two coherent sources  vibrating in phase, then for an arbitrary point P destructive interference is observed whenever the path difference is

Answer : Option B
Explaination / Solution:
No Explaination.


Q5.
If we have two coherent sources  vibrating in phase with same amplitude, then for an arbitrary point P with path difference corresponding to  , the resultant intensity if the intensity due to each is I0 would be

Answer : Option C
Explaination / Solution:
No Explaination.


Q6. Referring to the Young’s double slit experiment, Phase difference corresponding to a Path Difference of λ /3 is
Answer : Option A
Explaination / Solution:
No Explaination.


Q7. Referring to the Young’s double slit experiment, Path Difference corresponding to a Phase difference of π/3 is
Answer : Option C
Explaination / Solution:
No Explaination.


Q8. Referring to the Young’s double slit experiment, if D and d are distance from slit to screen and screen center to point P fringe width is given by
Answer : Option D
Explaination / Solution:
No Explaination.


Q9. In general the term diffraction is used
Answer : Option B
Explaination / Solution:
No Explaination.


Q10. Diffraction also refers to
Answer : Option C
Explaination / Solution:
No Explaination.