AP EAMCET202021 Sep 2020Morning ShiftPhysicsDual Nature of MatterActual
If the wavelength of a photon is (4000 Å ), then its energy will be
Options
- A(4.95 10⁻¹⁹ ~J )
- B(5.95 10⁻¹⁹ ~J )
- C(3.95 10⁻¹⁹ ~J )
- D(6.95 10⁻¹⁹ ~J )
Correct answer
A. (4.95 10⁻¹⁹ ~J )
Step-by-step solution
Wavelengh of photon, ( =4000 Å=4 10⁻⁷ ~m ) Energy of photon, (E= h c ) ( aligned & = 6.62 10⁻³⁴ 3 10^8 4 10⁻⁷ & =4.96 10⁻¹⁹ ~J 4.95 10⁻¹⁹ ~J aligned )