NEET Questions Solved


A beam of light of wavelength λ and with illumination L falls on a clean surface of sodium. If N photoelectrons are emitted each with kinetic energy E, then 
(a) N ∝ L and E ∝ L                    (b) N ∝ L and E1λ
(c) Nλ and E ∝ L                    (d) N1λ and E1L

(b) Number of photons emitted is proportional to the intensity. Also hcλ=W0+E

Difficulty Level:

  • 5%
  • 72%
  • 20%
  • 5%
Crack NEET with Online Course - Free Trial (Offer Valid Till September 23, 2019)