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

How is a galvanometer converted into

1. an ammeter and
2. a voltmeter?

Deduce the relation for the magnetic induction at a point due to an infinitely long straight conductor carrying current.

Obtain a relation for the magnetic induction at a point along the axis of a circular coil carrying current.

What is tangent law? Discuss in detail.

Discuss the conversion of galvanometer into an ammeter and also a voltmeter.

What is meant by wattles current?

Give any one definition of power factor.

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 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.

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?

What are the shapes of wavefront for source at infinite?

I₀ is the intensity of light existing between two cross Polaroids kept with their axes perpendicular to each other. A third polaroid is introduced between them. What must be the angle between the axes of the first and the newly introduced polaroid to get the maximum light from the whole arrangement?

What is mass defect?

If the voltage applied on a capacitor is increased from V to 2V, choose the correct conclusion.

A parallel plate capacitor stores a charge Q at a voltage V. Suppose the area of the parallel plate capacitor and the distance between the plates are each doubled then which is the quantity that will change?