NEET Questions Solved


Wavelength of a 1 keV photon is 1.24×10-9 m. What is the frequency of 1 MeV photon

(a) 1.24×1015 Hz      (b)  2.4×1020 Hz
(c) 1.24×1018 Hz      (d) 2.4×1023 Hz

(b) E=hvv=Eh=1×106×1.6×10-196.6×10-34=2.4×1020 Hz

Difficulty Level:

  • 21%
  • 52%
  • 19%
  • 10%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 23, 2019)