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.

Discuss about simple microscope and obtain the equations for magnification for near point focusing and normal focusing.

What is the near point focusing?

Why is oil-immersed objective preferred in a microscope?

What are the advantages and disadvantages of using a reflecting telescope?

What is the use of an erecting lens in a terrestrial telescope?

What is the use of collimator in a spectrmeter?