Question

If change in energy $\left(\Delta E\right)=3\times {10}^{-8}J,h=6.64\times {10}^{-34}J-s$ and $c=3\times {10}^{8}m/s$ , then wavelength of the light is

• A. $6.64\times {10}^3\mathring{A}$
• B. $6.64\times {10}^5\mathring{A}$
• C. $6.64\times {10}^{-8}\mathring{A}$
• D. $6.64\times {10}^{18}\mathring{A}$

Answer 1

The correct option is C $6.64\times {10}^{-8}\mathring{A}$