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प्रश्न
A ray of light moving from an optically rarer to a denser medium
पर्याय
bends away from the normal
bends towards the normal
remains undeviated
none of the above
उत्तर
bends towards the normal
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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
The colour of white light which suffers the maximum bending (or maximum refraction) on passing through a glass prism is:
(a) yellow
(b) orange
(c) red
(d) violet
The seven colours in the spectrum of sunlight in order, are represented as :
Which is optically denser: water or air? Give reason
Complete the ray diagram given below to show the nature of light produced on the screen.
In an experiment to trace the path of a ray of light through a triangular glass prism, a student would observe that the emergent ray
(a) is parallel to the incident ray.
(b) is along the same direction of incident ray.
(c) gets deviated and bends towards the thinner part of the prism.
(d) gets deviated and bends towards the thicker part (base) of the prism.
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?
Observe the given figure and answer the following questions.
- Which colour light rays bend most?
- Which colour light rays bend least.
- What is the wavelength of violet light rays?
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Instead of sunlight, a green-coloured ray is passed through a glass prism. What will be the colour of the emergent ray?
Make a rainbow
Try to make your own rainbow. You can try this project in the morning or in the evening. Stand with your back towards the Sun. Take a hosepipe or a water pipe used in the garden. Make a fine spray in front of you. You can see different colours of rainbow in the spray.
