| Assertion (A): Diffraction takes place with all types of waves. |
| Reason (R): Diffraction is perceptible when the wavelength of the wave is comparable to the dimension of the diffracting device. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: B
Solution :
| Option [b] is correct. |
| Explanation: Diffraction is spreading of waves around obstacle. It takes place with all types of waves (mechanical, non-mechanical, transverse, longitudinal) and with very small moving particles (atom, neutron, electron etc.) which show wave like property. So, the assertion is true. |
| Diffraction is perceptible when the wavelength of the wave is comparable to the dimension of the diffracting device. The reason is also true. |
| But it does not explain the assertion. |
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