The mass fo an electron is ` 9. 1 xx 10^(-31) kg`. If its K.E. is `3. 0 xx 10 ^(25) J`. Calculate its wavelength .

Explanation

To calculate the wavelength of an electron given its mass and kinetic energy, we can follow these steps:

### Step 1: Write down the formula for kinetic energy
The kinetic energy (K.E.) of an object is given by the formula:
\[ K.E. = \frac{1}{2} mv^2 \]
where:
- \( m \) is the mass of the object,
- \( v \) is the velocity of the object.
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