Optics Question 58
Question: Assertion : In Young’s experiment, the fringe width for dark fringes is different from that for white fringes. Reason : In Young’s double slit experiment the fringes are performed with a source of white light, then only black and bright fringes are observed.
[AIIMS 2001]
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: D
Solution:
In Young’s experiments fringe width for dark and white fringes are same while in Young’s double slit experiment when a white light as a source is used, the central fringe is white around which few coloured fringes are observed on either side.
