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प्रश्न
Draw the diagram of refraction of light in the glass slab
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उत्तर
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संबंधित प्रश्न
Explain how the formation of a rainbow occurs.
Which of the above wavelengths has a higher frequency?
A ray of light is passing from a transparent medium 1 to another transparent medium 2 (i) Speed up (ii) slows down. In each case, state whether the refractive index of medium 2 is equal to, less than or greater than the refractive index of medium 1.
The diagram alongside shows the refraction of a ray of light from air to a liquid.
- Write the values of (i) angle of incidence, (ii) angle of refraction.
- Use Snell’s law to find the refractive index of liquid with respect to air.
Fig shows a lens as a combination of a glass block and two prisms.
(i) Name the lens formed by the combination.
(ii) what is the XX' called?
(iii) Complete the ray diagram and show the path of the incident ray PQ after passing through the lens.
(iv) The final emergent ray will either meet XX' at a point or appear to come from a point on XX'. what is the point called?
Draw a diagram to show the splitting of white light into its constituent colours.
A total reflecting equilateral prism can be used to deviate a ray of light through:
What is meant by the refraction of light?
Why do the faces of persons sitting around campfire appear to shimmer?
Why upper surface of water contained in a beaker and above eye level appears silvery?
During sunset and sunrise, the sun is seen when it is slightly below the horizon. Give reason.
Name the material for which the refractive index is found to be maximum.
State the relation between the refractive index μ and the velocity of light (vm) in that medium.
What should be the ratio of the speed of light through the liquid to the speed through the glass so that there is no refraction of light at the boundaries of the glass block when the system is illuminated by the light of one colour?
Define the term refractive index of a medium in terms of velocity of light.
Explain briefly what causes the twinkling of stars at night.
In the diagram below, PQ is a ray of light incident on a rectangular glass block.
Copy the diagram and complete the path of the ray of light through the glass block. In your diagram, mark the angle of incidence by letter ‘i’ and the angle of emergence by the letter ‘e’.
How does the angle of deviation produced by a prism depend on the angle of incidence of light at the prism surface? Draw a graph to illustrate your answer.
The diagram shows the path of a ray of light through a rectangular glass block placed in a liquid of uniform density.
(a) Does the light speed up or slow down in the glass,
(b) Give the reason for your answer.
The speed of light in air is 3 × 108 ms-1. Calculate the speed of light in water. The refractive index of water is 4/3.
