In a photoelectric experiment, with light of wavelength `lambda`, the fastest election has speed v. If the exciting wavelength is changed to `(3lambda)/4`, the speed of the fastest emitted electron will become

Options

A. `vsqrt(3/4)`
B. `vsqrt(4/3)`
C. less than `vsqrt(3/4)`
D. greater then `vsqrt(4/3)`

Explanation

To solve the problem, we need to analyze the photoelectric effect using the relevant equations and relationships.

### Step-by-Step Solution:

1. **Understand the Photoelectric Effect**:
The photoelectric effect can be described by the equation:
\[
E = \phi + KE_{max}
...