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प्रश्न
What are the seven colours seen in a rainbow?
उत्तर
The seven colours seen in a rainbow are red, orange, yellow, green, blue, indigo and violet.
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संबंधित प्रश्न
A student traces the path of a ray of light through a triangular glass prism for different values of angle of incidence. On analyzing the ray diagrams, which one of the following conclusions is he likely to draw?
(A) The emergent ray is parallel to the incident ray.
(B) The emergent ray bends at an angle to the direction of the incident ray.
(C) The emergent ray and the refracted ray are at right angles to each other.
(D) The emergent ray is perpendicular to the incident ray.
In the formation of spectrum of white light by a prism:
which colour is deviated most?
Why do you not see a spectrum of colours when light passes through a flat pane of glass?
A wave has wavelength 50Å of State its one use.
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?
Write the range of wavelength of the visible spectrum.
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 white light enters a glass prism from the air, the angle of deviation is least for ____________.
In dispersion, the color of light that will bend more is ______.
During dispersion of white light by prism placed in air, for a particular value of angle of prism,
