List of top Physics Questions

A choke coil has
Order of magnitude of density of uranium nucleus is $ (m_p = 1.67 \times 10^{-27} Kg ) $
Binding energy per nucleon versus mass number curve for nuclei is shown in figure. W, X, Y and Z are four nuclei indicated on the curve. The process that would release energy is
A particle of mass M at rest decays into two particles of masses $ m_1 \, and \, \, m_2 $ having non-zero velocities. The ratio of the de-Broglie wavelengths of the particles $ \frac{\lambda_1}{\lambda_2} $ is
Which of the following quantity is increased in a step-down transformer?
Which of the following affects the elasticity of a substance?
Two identical conductors of copper and aluminium are placed in an identical electric field. The magnitude of induced charge in the aluminium will be
The number of electrons for one coulomb of charge is
Sky appears to be blue in clear atmosphere due to light??
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?