HSC Science कक्षा १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Physics

A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away from the mirror. The length of the image is,

A plane glass is placed over a various coloured letters (violet, green, yellow, red) The letter which appears to be raised more is ______.

When light is incident on a soap film of thickness 5 x 10^-5 cm, the wavelength of light reflected maximum in the visible region is 5320 A. Refractive index of the film will be ______.

A ray of light strikes a glass plate at an angle 60°. If the reflected and refracted rays are perpendicular to each other, the refractive index of the glass is ______.

What is angle of deviation due to reflection?

Give the characteristics of image formed by a plane mirror.

What are the salient features of corpuscular theory of light?

What are the important points of wave theory of light?

What is the significance of electromagnetic wave theory of light?

Write a short note on quantum theory of light.

Why are dish antennas curved?

What type of lens is formed by a bubble inside water?

It is possible for two lenses to produce zero power?

A small disc is placed in the path of the light from a distance source. Will the center of the shadow be bright or dark?

When a wave undergoes reflection at a denser medium, what happens to its phase?

An object is placed at a certain distance from a convex lens of focal length 20 cm. Find the distance of the object if the image obtained is magnified 4 times.

An object is placed in front of a concave mirror of focal length 20 cm. The image formed is three times the size of the object. Calculate two possible distances of the object from the mirror.

A beam of light of wavelength 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. What is the distance between the first dark fringe on either side of the central bright fringe?

Suppose an alpha particle accelerated by a potential of V volt is allowed to collide with a nucleus whose atomic number is Z, then the distance of closest approach of alpha particle to the nucleus is ______.

In a hydrogen atom, the electron revolving in the fourth orbit, has angular momentum equal to ______.