| ⇦ | 
| ⇨ |
The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å. The refractive index of material will be
Options
(a) 1.5
(b) 3
(c) 1.33
(d) 1.4
Correct Answer:
3
Explanation:
By using v = nλ , n = 2 x 10¹⁴ Hz
λ = 5000Å = 5000 x 10⁻¹⁰ m
v = 2 x 10¹⁴ x 5000 x 10⁻¹⁰ = 10⁸ m/s
Refractive index of the material,
µ = c / v = 3 x 10⁸ / 10⁸ = 3
Related Questions: - A beam of light of wavelength 590 nm is focussed by a converging lens of diameter
- A small block of super dense material has mass 3 x 10²⁴ kg.It is situated at a height
- A heavy nucleus at rest breaks into two fragments which fly off with velocities
- A radiactive substance emits 100 beta particles in the first 2s and 50 beta
- An ideal heat engine works between temperature T₁=500 K and T₂=375 K.
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A beam of light of wavelength 590 nm is focussed by a converging lens of diameter
- A small block of super dense material has mass 3 x 10²⁴ kg.It is situated at a height
- A heavy nucleus at rest breaks into two fragments which fly off with velocities
- A radiactive substance emits 100 beta particles in the first 2s and 50 beta
- An ideal heat engine works between temperature T₁=500 K and T₂=375 K.
Topics: Ray Optics (94)
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