List of top Physics Questions

The distance between the focal point and the optic centre gives the

A lens is made up of

If i and r are the angle of incidence and angle of refraction, then the equation for the Snell's law is

If x and y are the temperatures of the hot and cold water samples respectively and z is the final temperature of their mixture, then

When freely suspended, the compass needle come to rest along the geographic

The magnetic flux passing through a unit area perpendicular to the field is called

The development of electromagnetism lead to the invention of

The SI units of magnetic flux and magnetic flux density respectively are

Pick the false statement on the magnetic field lines.

For the children below the age of 10 years, the value of least distance of distinct vision is about

Dioptre is the unit of

A person cannot see the objects placed between near point and the point of least distance of distinct vision. His defect of vision can be corrected by using

For a healthy eye, the accommodation of eye lens will be in the range of

The defect of vision in which the people cannot see the objects beyond far point is called

The materials which are useful in making of diodes, transistors and integrated chips (ICs) etc. are

A current of 1·5 A passes through a conductor of resistance 20Ω. The potential difference across it is

Pick the false statement from the following :

1 joule/ 1 coulomb =

The graph between potential difference (on X-axis) and current (on Y-axis) for a conductor gives a straight line

The materials which have resistivity in the order of 10¹⁴ to 10¹⁶ Ω-m are

Match the following:

Physical quantity		SI Unit
i	Electric current	a	Coulomb
ii	Electric charge	b	Volt
iii	Electric potential	c	Ampere

The material suitable for making heating element of electric iron is

Pick the correct answer from the following two statements:
a) A lens has at least one curved surface.
b) A plano-concave lens has two curved surfaces.

A convex lens gives an image of the same size of the object when the object is placed

Which of the following lens is used as magnifying lens?