Question

For intensity of light to get increased, what are the possible option(s)?

• A. Number of photons emitted per unit time increases.
• B. More energetic photons are emitted.
• C. Faster photons are emitted.
• D. Frequency of light increases.

Answer 1

Answer: (A), (B), (D)

Frequency of light increases.

We know that, the intensity of light is given by,

$I=\frac{P}{A}=\frac{E}{tA}=\frac{nh\nu }{tA}$

So, intensity increases when number of photons emitted per unit time increases, frequency of light increases or more energetic photons are emitted.

Hence, options $\left(A\right),\left(B\right)$ and $\left(D\right)$ are correct. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->