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प्रश्न
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.
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उत्तर
When a ray of light enters a prism, it bends towards the normal; as it leaves the prism, it bends away from the normal.
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संबंधित प्रश्न
The path of a ray of light passing through a glass prism is shown below:
In this diagram, the angle of prism, angle of incidence, angle of emergence and angle of deviation, respectively, have been represented by:
(A) O, Y, Z and N,
(B) P, Y, M and Z,
(C) O, X, M and Z,
(D) P, X, Z and N.
A student is observing a diagram showing the path of a ray of light passing through a glass prism. He would find that for all angles of incidence the ray of light bends:
Why do the component colours of incident white light split into a spectrum while passing through a glass prism, explain
Define the term dispersion of white light.
What happens when a ray of ordinary light is passed through a triangular glass prism?
What is a rainbow? What are the two conditions necessary for the formation of a rainbow in the sky?
The coloured light having the maximum speed in glass prism is:
(a) blue
(b) green
(c) violet
(d) yellow
Out of air and glass, which is optically rarer? Give reason.
A ray of white light falls on a prism. Draw a ray diagram to show that the prism disperses the white light.
When a white light ray falls on a prism, the ray at its first surface suffers ______.
A glass prism is able to produce the spectrum when white light passes through it, but a glass slab doesn’t produce any spectrum. Explain why it is so.
The wavelength range of white light is ______.
A wave has wavelength 50Å of State the speed in vacuum.
What do you understand by spectrum? Name the seven prominent colours in order, as obtained in the spectrum of white light.
Suggest one way, in each case, by which we can detect the presence of Infrared radiations.
In the figure, a beam of light consisting of three colours blue, red, and yellow is incident on a prism and on a rectangular glass block respectively. Complete the diagram by drawings of the refracted and emergent rays.
Write an Explanation.
Critical angle
State the correct sequence (1-7) of colours in the spectrum formed by the prisms A and B, shown in the following figure.
