The threshold frequency for a metallic surface corresponds to an energy of 6.2 e V and the stopping potential for a radiation incident on this surface is 5 V . The incident radiation lies in

Question

The threshold frequency for a metallic surface corresponds to an energy of 6.2 e V and the stopping potential for a radiation incident on this surface is 5 V . The incident radiation lies in, ultra-violet region, infrared region, visible region, x - ray region

MARKS App · Accepted Answer

We know that E = w 0 + KE max h c λ = 5 eV ⁡ + 6.2 eV ⁡ = 11. 2 e V λ = 12400 11 ⋅ 2 Å λ = 1107 Å This lies in Ultra Violet light Region.

Search any question & find its solution

Looking for more such questions to practice?