Statement-1 : In photoelectric effect, the number of photoelectrons emitted is always equal to number of photons incident.
and
Statement-2 : All the photons falling on the surface will eject photoelectron, is not necessary.

Options

A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1
C. Statement-1 is True, Statement-2 is False.
D. Statement-1 is False, Statement-2 is True.

Answer

To analyze the statements provided in the question regarding the photoelectric effect, we can break down the solution step by step.

### Step-by-Step Solution:

1. **Understanding Statement 1**:
- The first statement claims that "In the photoelectric effect, the number of photoelectrons emitted is always equal to the number of photons incident."
- In the photoelectric effect, not every photon that strikes the surface of a material will result in the emission of a photoelectron. This is because only photons with energy greater than or equal to the work function of the material can eject electrons. Additionally, not all incident photons will interact with electrons.

**Conclusion**: This statement is **false**.

2. **Understanding Statement 2**:
- The second statement asserts that "All the photons falling on the surface will eject photoelectrons, is not necessary."
- This statement aligns with the principles of the photoelectric effect. It is indeed true that not all photons will eject photoelectrons. Only those photons that have sufficient energy and interact with electrons can cause the emission of photoelectrons.

**Conclusion**: This statement is **true**.

3. **Final Evaluation**:
- Since Statement 1 is false and Statement 2 is true, we can conclude that the correct interpretation of the statements is that the first statement does not hold true, while the second statement is valid.

### Final Answer:
- Statement 1: False
- Statement 2: True