List of top Physics Questions

Write True or False:
The average power supplied to an inductor over one complete cycle is zero.
Write answer of each question in one sentence: What is the unit of power of lens?
Write answer of each question in one sentence: What is direction of magnetic dipole moment of a magnet?
Write answer of each question in one sentence: What is diffraction?
Write answer of each question in one sentence: How Galvanometer is changed in a voltmeter?
Write True or False:
In an intrinsic semiconductor the number of free electrons is equal to the number of holes.
Write True or False:
Atom is a positive particle.
The \(\underline{\hspace{3cm}}\) of the galvanometer is reduced by the use of shunt.
Write True or False:
Voltmeter is more superior to potentiometer.
Write True or False:
Infrared radiation is invented by scientist Retar.
Write True or False:
De-broglie waves are an electromagnetic wave.
Magnetic field is a \(\underline{\hspace{3cm}}\) quantity.
The focal length of eye piece in telescope \(\underline{\hspace{3cm}}\) the focal length of the objective.
The velocity of light \(\underline{\hspace{3cm}}\) when it goes to rare medium to denser.
The ohmic resistance of an ideal inductance is \(\underline{\hspace{3cm}}\).
Electromagnetic wave of highest frequency is \(\underline{\hspace{3cm}}\).
The frequency of the light wave is order of \(\underline{\hspace{3cm}}\).
The frequency of a Direct Current is \(\underline{\hspace{3cm}}\).
Which device is used as a rectifier?
Forbidden energy gap for Germanium semiconductor is -
The phase difference between flowing current and applied voltage in alternating circuit containing pure capacitor is -
Bhabha Atomic Research Centre is situated in -
S.I. unit of current density is -
A diverging lens of focal length 20 cm and a converging lens of focal length 30 cm are placed 15 cm apart with their principal axes coinciding. Where should an object be placed on the principal axis so that its image is formed at infinity?
A flask contains a monoatomic and a diatomic gas in the ratio of \( 4:1 \) by mass at a temperature of \( 300K \). The ratio of average kinetic energy per molecule of the two gases is: