Assertion : Newton’s rings are formed in the reflected system whe… - Vidyadip

MCQ

Assertion : Newton’s rings are formed in the reflected system when the space between the lens and the glass plate is filled with a liquid of refracitve index greater than that of glass, the central spot of the pattern is bright.

Reason : This is because the reflection in these cases will be from a denser to rarer medium and the two interfering rays are reflected under similar conditions.

✓
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.

✓

Answer

Correct option: A.

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

a
Newton’s rings are formed in reflected system and if the refractive index of the first medium is more than the second medium, there is no reversal of phase in reflected ray so, central fringe remains bright

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