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प्रश्न
As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?
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उत्तर
As light rays emerge from a glass prism into the air, they are refracted away from the normal.
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संबंधित प्रश्न
Draw a ray diagram to explain the term angle of deviation.
As light rays pass from air into a glass prism, are they refracted towards or away from the normal?
What will happen if another similar glass prism is placed upside down behind the first prism?
Make two diagrams to explain refraction and dispersion.
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
Name the process which is involved in the formation of a rainbow.
The coloured light having the maximum speed in glass prism is:
(a) blue
(b) green
(c) violet
(d) yellow
Which of the following colour of white light has the least wavelength?
(a) red
(b) orange
(c) violet
(d) blue
A ray of light moving from an optically rarer to a denser medium
You are given a disc divided into seven sectors with colours violet, indigo, blue, green, yellow, orange and red in them. What would be its colour when it is rotated rapidly?
Explain the cause of dispersion of white light through a prism.
- A beam of monochromatic light undergoes minimum deviation through an equiangular prism, how does the beam pass through the prism, with respect to its base?
- If white light is used in the same way as in part (a) above, what change do you expect in the emergent beam?
- What conclusion do you draw about the nature of white light in part (b)?
The frequency range of visible light is from 3.75 × 1014 Hz to 7.5 × 1014 Hz. Calculate its wavelength range. Take speed of light = 3 × 108 m/s.
A wave has wavelength 50Å of name the wave.
How can the presence of ultraviolet radiation be detected?
Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?
In dispersion, the color of light that will bend more is ______.
The dispersive powers of flint glass and crown glass are 0.053 and 0.034, respectively and their mean refractive indices are 1.68 and 1.53 for white light. Calculate the angle of the flint glass prism required to form an achromatic combination with a crown glass prism of refracting angle 4°:
State the colour which bends:
- The most.
- The least while passing through a glass prism.
