Assertion : A white source of light during interference forms onl… - Vidyadip

MCQ

Assertion : A white source of light during interference forms only white and black fringes.

Reason : Width of fringe is inversely proportional to the wavelength of the light used.

A
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.
✓
If both the Assertion and Reason are incorrect.

✓

Answer

Correct option: D.

If both the Assertion and Reason are incorrect.

d
A white source of light during interference will form coloured fringes.

Fringe width is given by $\beta =\frac {\lambda D}{d}$ i.e., it is

directly proportional to wavelength.

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