Question

The quantum of energy carried by a single photon of 6x1014 frequency is: 1) 1.98*10-16 2) 2.98x10-19 J 3) 3.98x10-19 J 4) 4.98x10-16 J​

Answer 1

3) 3.98 × 10⁻¹⁹ J  

Explanation:

Given: ν = 6 × 10¹⁴, h = 6.626 × 10⁻³⁴, E = ?

Energy of photon = E = hν

                                    = 6.626 × 10⁻³⁴ × 6 × 10¹⁴

                                    = 3.98 × 10⁻¹⁹ J  

Hence option 3 is the correct.