HSC Science Class 12 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Physics

Discuss the interference in thin films and obtain the equations for constructive and destructive interference for transmitted and reflected light.

Explain about the compound microscope and obtain the equation for magnification.

Two independent monochromatic sources cannot act as coherent sources, why?

Does diffraction take place at Young’s double-slit?

In Young’s double slit experiment, the slits are 2 mm apart and are illuminated with a mixture of two wavelength λ₀ = 750 nm and λ = 900 nm. What is the minimum distance from the common central bright fringe on a screen 2 m from the slits where a bright fringe from one interference pattern coincides with a bright fringe from the other?

In Young’s double-slit experiment, 62 fringes are seen in the visible region for sodium light of wavelength 5893 Å. If violet light of wavelength 4359 Å is used in place of sodium light, then what is the number of fringes seen?

Show that nuclear density is almost constant for nuclei with Z > 10.

Explain in detail the nuclear force.

Calculate the radius of the earth if the density of the earth is equal to the density of the nucleus. [mass of earth 5.97 x 10²⁴ kg].

The ratio of maximum and minimum intensities in an interference pattern is 36 : 1. What is the ratio of the amplitudes of the two interfering waves?

Light of wavelength 600 nm that falls on a pair of slits producing interference pattern on a screen in which the bright fringes are separated by 7.2 mm. What must be the wavelength of another light which produces bright fringes separated by 8.1 mm with the same apparatus?

Define bandwidth of transmission system.

Explain the basic elements of the communication system with the necessary block diagram.

Two coherent monochromatic light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are ______.

First diffraction minimum due to a single slit of width 1.0 × 10^-5 cm is at 30°. Then wavelength of light used is ______.

What is diffraction?

Differentiate between Fresnel and Fraunhofer diffraction.

Mention the differences between interference and diffraction.

Discuss the special cases on first minimum in Fraunhofer diffraction.

What is Fresnel’s distance? Obtain the equation for Fresnel’s distance.