| ⇦ | 
| ⇨ |
Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is
Options
(a) 4×10⁻¹¹ sec
(b) 2×10⁻¹¹ sec
(c) 16×10⁻¹¹ sec
(d) 8×10⁻¹¹ sec
Correct Answer:
4×10⁻¹¹ sec
Explanation:
t = μx / c = (3 × 4 × 10⁻³) / (3 × 10⁸) = 4 x 10⁻¹¹ sec
Related Questions: - A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
- If a solid sphere of mass 1 kg and radius 0.1 m rolls without slipping at a uniform
- Two coherent sources of different intensities send waves which interfere.
- If a vector 2i+3j+8k is perpendicular to the vector 4j-4i+αk, then value of α is
- A radioactive substance emits n beta particles in the first 2 s and 0.5 n beta
Topics: Wave Optics
(101)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
- If a solid sphere of mass 1 kg and radius 0.1 m rolls without slipping at a uniform
- Two coherent sources of different intensities send waves which interfere.
- If a vector 2i+3j+8k is perpendicular to the vector 4j-4i+αk, then value of α is
- A radioactive substance emits n beta particles in the first 2 s and 0.5 n beta
Topics: Wave Optics (101)
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