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What is the energy of photon whose wavelength is 6840 Å?
Options
(a) (1.81 eV)
(b) (3.6 eV)
(c) (-13.6 eV)
(d) (12.1 eV)
Correct Answer:
(1.81 eV)
Explanation:
λ = 6840 Å
.·. ʋ = c / λ ⇒ hʋ = hc / λ
If hc = 12400 eV Å
Energy of the photon = 12400eV Å / 6840 Å
= 1.81 Å
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Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In an ammeter, 0.2% of main current passes through the galvanometer
- The parallel beams of monochromatic light of wavelength 4.5 x10⁻⁷ m passes through
- Two bodies of masses m and 4 m are moving with equal K.E. The ratio of their linear
- The minimum number of NAND gates used to construct an OR gate is
- The process of adding impurities to the pure semiconductor is called
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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