| Direction: For the following questions, choose the correct answers from the codes [a], [b], [c] and [d] defined as follows |
| Statement I If we cover one slit in YDSE by an opaque plate then, interference pattern wouldn't be observed on screen. |
| Statement II In YDSE, for interference pattern to be observable, the two slits may be of different intensities, but each has to be non-zero. |
A) Statement I is true. Statement II is also true and Statement n is the correct explanation of Statement I.
B) Statement I is true. Statement II is also true and Statement II is not the correct explanation of Statement I.
C) Statement I is true. Statement II is false.
D) Statement I is false. Statement II is true.
Correct Answer: A
Solution :
When one slit is covered by an opaque object, then no light from this slit is allowed to pass through and hence no question arises to interference, for interference pattern to be seen the intensities of two slits must be non-zero, so that superposition of two waves can take place.
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