List of top Physics Questions

Relation between critical angle of water and the glass is
If a cyclist moving with a speed of $4.9\, m / s$ on a level road can take a sharp circular turn of radius $4 \,m$, then coefficient of friction between the cycle tyres and road is
How many significant figures are there in $30.00$ ?
Dimensions $\left[ ML ^{-1} T ^{-1}\right]$ are related to
Only a change in magnetic flux will maintain an induced current in the coil. The presence of large magnetic flux through a coil maintains a current in the coil if the circuit is continuous.
On a rainy day, it is difficult to drive a car or bus at high speed. The value of coefficient of friction is lowered due to wetting of the surface.
Isotopes of an element can be separated by using a mass spectrometer. Separation of isotopes is possible because of the difference in electron numbers of isotopes.
A resonance air column of length $20\, cm$ resonates with a tuning fork of frequency $450\, Hz$. Ignoring the correction, the velocity of sound in air will be
The ammeter A reads 2 A and the voltmeter V reads 20 V. The value of resistance R is:
In forward bias, the width of potential barrier in a p-n junction diode
In a p type semiconductor, the majority carriers of current are
In a junction diode the holes due to:
When a thin metal plate is placed in the path of one of the interfering beams of light
Which of the following is used as a moderator in nuclear reaction?
In Young?s experiment, the monochromatic light is used to illuminate two slits $A$ and $B$ as shown. Interference fringes are observed on a screen placed in front of the slits. Now if a thin glass plate is placed normally in the path of beam coming from the slit $A$, then
Energy is not carried by which of the following wave?
Diode is used as a/an
Boolean algebra is essentially based on
The reaction responsible for the production of light energy from the sun is
A particle of mass $ m $ moving with velocity $ v $ collides with a stationary particle of mass $ 2m $ . The speed of the system, will be:
In n-type semiconductors, majority charge carriers are
Two identical circular loops of metal wire are lying on a table without touching each other. Loop A carries a current which increases with time. In response, the loop B
The ratio of the speed of sound in nitrogen gas to that in helium gas, at 300 K. is
Which one of the following statement is true?
If the kinetic energy of one mole of an ideal gas is given as $ E=\frac{3}{2}RT $ (where 7? is the universal gas constant and T is the absolute temperature of the gas), the molar specific heat at constant pressure will be given as