| ⇦ | 
| ⇨ |
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 beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m
- The ratio of the weight of a man in a stationary lift and when it is moving downwards
- A force of 10 newton acts on a body of mass 20 kg for 10 seconds. Change in its momentum
- A projectile is fired at 30°. Neglecting friction, the change in kinetic energy when
- The energy required to charge a parallel plate condenser of plate separation d
Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m
- The ratio of the weight of a man in a stationary lift and when it is moving downwards
- A force of 10 newton acts on a body of mass 20 kg for 10 seconds. Change in its momentum
- A projectile is fired at 30°. Neglecting friction, the change in kinetic energy when
- The energy required to charge a parallel plate condenser of plate separation d
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