List of practice Questions

Write True or False:
Working of microwave oven is based on Radio wave.
Write answer of each question in one sentence: What is threshold frequency?
Write answer of each question in one sentence: What is diffraction?
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: How Galvanometer is changed in a voltmeter?
The \(\underline{\hspace{3cm}}\) of the galvanometer is reduced by the use of shunt.
Write True or False:
Infrared radiation is invented by scientist Retar.
Write True or False:
In an intrinsic semiconductor the number of free electrons is equal to the number of holes.
Write True or False:
Voltmeter is more superior to potentiometer.
Write True or False:
De-broglie waves are an electromagnetic wave.
Write True or False:
Atom is a positive particle.
The focal length of eye piece in telescope \(\underline{\hspace{3cm}}\) the focal length of the objective.
The ohmic resistance of an ideal inductance is \(\underline{\hspace{3cm}}\).
The frequency of a Direct Current 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 velocity of light \(\underline{\hspace{3cm}}\) when it goes to rare medium to denser.
Magnetic field is a \(\underline{\hspace{3cm}}\) quantity.
The phase difference between flowing current and applied voltage in alternating circuit containing pure capacitor is -
Bhabha Atomic Research Centre is situated in -
Forbidden energy gap for Germanium semiconductor is -
Which device is used as a rectifier?
S.I. unit of current density is -
What is the meaning of the batil marriage in Muslim Law?