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प्रश्न
The speed of light in air or vacuum is
विकल्प
3 × 108 M s-1
2.25 × 108 m s-1
332 ms-1
2.0 × 108 ms-1
उत्तर
3 × 108 M s-1
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संबंधित प्रश्न
Study the following diagrams in which the path of a ray of light passing through a glass prism as traced by four students P, Q, R and S is shown:
The student who has traced the path correctly is
(A) P
(B) Q
(C) R
(D) S
Fill in the blank with suitable word:
When a ray of light enters a prism, it bends ................ the normal ; as it leaves the prism, it bends ................. the normal.
Draw a diagram to show the refraction of light through a glass prism. On this diagram, mark
(i) incident ray
(ii) emergent ray, and
(iii) angle of deviation.
In the following diagram, the correctly marked angles are
(A) All
(B) Only ∠i and ∠A
(C) ∠i, ∠r and ∠A
(D) ∠i, ∠A and ∠D
The wavelengths of violet and red light are 4000 Å and 8000 Å respectively. Which of the two has the higher frequency?
Answer the following question:
Differentiate between a glass slab and a glass prism. What happens when a narrow beam of
(i) a monochromatic light, and
(ii) white light passes through
(a) glass slab and
(b) glass prism?
The phenomena of light involved in the formation of rainbow are ______.
The periscope is an optical device with a polished surface that reflects the light falling on it.
______ colour is deviated the least in the spectrum of white light obtained with a glass prism.
