The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.

⇦

⇨

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:

1. An object is 8 cm high. It is desired to form a real image 4 cm high at 60 cm from
2. A lead bullet of 10 gm travelling at 300 m/s strikes against a block
3. A uniform chain of length L and mass m is kept on a smooth table. It is released
4. When we close one slit in the young’s double slit experiment, then
5. When current I is flowing through a conductor, the drift velocity is v.

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