Question

Consider the following statements in case of Young's double slit experiment. a) A slit $S$ is necessary if we use an ordinary extended source of light. b) A slit $S$ is not needed if we use an ordinary but well collimated beam of light. c) A slit $S$ is not needed if we use a spatially coherent source of light. Which of the above statements are correct?

• A. (a), (b) and (c)
• B. (b) and ( c)
• C. (b) and (c)
• D. (a) and (c)

Answer 1

Answer: (A)

(a), (b) and (c)

Answer 2

In the case of Young's double slit experiment. A slit $S$ is necessary if we use an ordinary extended source of light and $A$ slit $S$ is not needed if we use a spatially coherent source of light.