The correct statements among the following are:(Consider only normal incidence)

Options

A. Pressure exerted by photons for perfectly reflecting surface is `(2I)/C`
B. Force exerted by photons on a perfectely reflecting surface is `(2P)/C`
C. Impulse applied by photon on a perfectely reflecting surface is `(2E)/C`
D. Force exerted by photons on a perfectly reflecting surface is `P/C`

Explanation

To solve the problem, we need to analyze the statements regarding the behavior of photons when they strike a perfectly reflecting surface at normal incidence. Let's go through each statement step by step.

### Step 1: Analyze the first statement
**Statement 1:** The pressure exerted by photons on a perfectly reflecting surface is \( \frac{2I}{C} \).

- **Explanation:** The pressure \( P \) exerted by photons can be calculated using the formula:
\[
P = \frac{I}{c}(1 + R)
...