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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 +2D.
What is the nature of a lens whose power is, −4 D?
What is the unit of power of a lens? Define the unit of power of a lens.
How is the power of a lens related to its focal length?
The power of a lens is + 1.0 D is :
Consider three converging lenses L1, L2 and L3 having identical geometrical construction. The index of refraction of L1 and L2 are \[\mu_1 \text{ and } \mu_2\] respectively. The upper half of the lens L3 has a refractive index \[\mu_1\] and the lower half has \[\mu_2\] following figure . A point object O is imaged at O1 by the lens L1 and at O2 by the lens L2placed in same position. If L3 is placed at the same place,
(a) there will be an image at O1
(b) there will be an image at O2.
(c) the only image will form somewhere between O1 and O2
(d) the only image will form away from O2.
Complete the diagram to show the formation of the image of the object AB.
(i) Name the Lens LL’.
(ii) Where is the image of the object AB formed?
(iii) State three characteristics of the image.
Power of a lens is – 4D, then its focal length is
Define power of a lens. What is its unit? One student uses a lens of focal length 50 cm and another of –50 cm. What is the nature of the lens and its power used by each of them?
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?
