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प्रश्न
How can the presence of ultraviolet radiation be detected?
How can we detect the presence of ultraviolet radiation?
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उत्तर
In the presence of ultra-violet radiation, the silver chloride solution becomes dark brown or black.
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संबंधित प्रश्न
Draw a ray diagram to explain the term angle of deviation.
When a ray of light enters a prism, it bends ______ the normal; as it leaves the prism, it bends ______ the normal.
State the speed of light in (a) air, (b) water, and (c) glass
Complete the ray diagram given below to show the nature of light produced on the screen.
A wave has wavelength 50Å of name the wave.
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.
Say TRUE or FALSE
After passing through a prism, white light splits into a band of seven colours
A prism of refractive index `sqrt2` and refracting angle A produces minimum deviation δm of a ray on one face at an angle of incidence 45°, The values of A and δm are, respectively ______.
State the colour which bends:
- The most.
- The least while passing through a glass prism.
