Question

Assertion :Radio waves are diffracted by buildings. Reason: Radio waves are high energy waves.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is C Assertion is correct but Reason is incorrect

Assertion:

Diffraction is the bending of waves around obstacles and openings. The amount of diffraction increases with increasing wavelength. The wavelength of radio waves is much larger than the size of the buildings. As the amount of diffraction increases with the increasing wavelength so radio waves are diffracted by buildings.

Reason:

The high wavelength of the Radio waves corresponds to the low energy of the waves as energy is inversely proportional to the wavelength.

$E=\frac{hc}{\lambda }$

So, the radio waves are low energy waves.

Thus, Assertion is correct but Reason is incorrect.

Option $\left(C\right)$ is correct.