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प्रश्न
According to Rayleigh’s scattering law, the amount of scattering of light is inversely proportional to the fourth power of its ______.
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उत्तर
According to Rayleigh’s scattering law, the amount of scattering of light is inversely proportional to the fourth power of its wavelength.
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संबंधित प्रश्न
What is meant by a power of a lens? Define its SI unit.
Define the power of a lens.
The focal length of a convex lens is 25 cm. What is its power?
What is the power of a convex lens lens whose focal length is 80 cm?
A convex lens of power 5 D and a concave lens of power 7.5 D are placed in contact with each other. What is the :
(a) power of this combination of lenses?
(b) focal length of this combination of lenses?
Find the radius of curvature of the convex surface of a plano-convex lens, whose focal length is 0.3 m and the refractive index of the material of the lens is 1.5.
A thin converging lens is formed with one surface convex and the other plane. Does the position of image depend on whether the convex surface or the plane surface faces the object?
A diverging lens of focal length 20 cm and a converging lens of focal length 30 cm are placed 15 cm apart with their principal axes coinciding. Where should an object be placed on the principal axis so that its image is formed at infinity?
A convex lens is of focal length 20 cm. Find its power.
The focal length of a double convex lens is equal to the radius of curvature of either surface. What is the refractive index of its material?
