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Mention the differences between interference and diffraction.
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Discuss the special cases on first minimum in Fraunhofer diffraction.
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What is Fresnel’s distance? Obtain the equation for Fresnel’s distance.
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What is a diffraction grating?
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Obtain lens maker’s formula and mention its significance.
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Derive the equation for thin lens and obtain its magnification.
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Derive the equation for effective focal length for lenses in out of contact.
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Discuss diffraction at single slit and obtain the condition for nth minimum.
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Discuss the diffraction at a grating and obtain the condition for the mth maximum.
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Discuss the experiment to determine the wavelength of monochromatic light using a diffraction grating.
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Discuss the experiment to determine the wavelength of different colours using diffraction grating.
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Obtain the equation for resolving power of optical instrument
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A thin converging glass lens made of glass with refractive index 1.5 has a power of + 5.0 D. When this lens is immersed in a liquid of refractive index n, it acts as a divergent lens of focal length 100 cm. What must be the value of n?
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If the distance D between an object and screen is greater than 4 times the focal length of a convex lens, then there are two positions of the lens for which images are formed on the screen. This method is called conjugate foci method. If d is the distance between the two positions of the lens, obtain the equation for a focal length of the convex lens.
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What is the difference between resolution and magnification?
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Light of wavelength of 5000 Å produces diffraction pattern of the single slit of width 2.5 μm. What is the maximum order of diffraction possible?
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A point object is placed at 20 cm from a thin plano-convex lens of focal length 15 cm whose plane surface is silvered. Locate the position and nature of the final image.
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Find the ratio of the intensities of lights with wavelengths 500 nm and 300 nm which undergo Rayleigh scattering.
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