| ⇦ | 
| ⇨ |
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
Related Questions: - A block of mass 10 kg is moving in X-direction with a constant speed of 10 ms⁻¹
- A potentiometer wire of length 10 m and resistance 10 Ω per metre is connected in series
- A boy standing at top of a tower of 20 m height drops a stone
- A heavy stone hanging from a massless string of length 15 m is projected
- A tuned amplifier circuit is used to generate a carrier frequency of 2 MHz
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A block of mass 10 kg is moving in X-direction with a constant speed of 10 ms⁻¹
- A potentiometer wire of length 10 m and resistance 10 Ω per metre is connected in series
- A boy standing at top of a tower of 20 m height drops a stone
- A heavy stone hanging from a massless string of length 15 m is projected
- A tuned amplifier circuit is used to generate a carrier frequency of 2 MHz
Topics: Dual Nature of Matter and Radiation (150)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply