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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
Calculate the focal length of a corrective lens having power +2.5 D.
Define the term focal length of a lens.
State the condition for the following a ray passes undeviated through the lens .
How is accommodation produced?
The focal length of a concave lens is 20 cm. The focal length of a convex lens is 25 cm. These two are placed in contact with each other. What is the power of the combination? Is it diverging, converging or undeviating in nature?
A convex lens with radii of curvature R1 = R2 is immersed in water. Assuming that the refractive indices of glass and water are 3/2 and 4/3 respectively, its focal length f1 in comparison to that in air, f, is ______.
The power of a lens is defined as the:
The power of a lens placed in a medium is given by:
A convex lens has:
For a lens with \[f = +12\,cm\], \[R_1 = +10\,cm\] and \[R_2 = -15\,cm\], the lens maker's formula \[\frac{1}{f}=(n-1)\left(\frac{1}{R_1}-\frac{1}{R_2}\right)\] gives the refractive index of the glass as:
