List of top Physics Questions

The physical quantity having the same dimensional formula as that of entropy is :
The photoelectric current can be increased by
The photoelectric cut off voltage in a certain experiment is $1.5\, V$. The maximum kinetic energy of photoelectrons emitted is
The phase difference between velocity and acceleration of simple harmonic oscillator.
The period of revolution of an earth's satellite close to surface of earth is 90 min. The time period of another satellite in an orbit at a distance of four times the radius of earth from its surface will be
The peak voltage of input a.c. to a full wave rectifier is $E_0$ The peak inverse voltage is
The peak voltage of 220 Volt AC mains (in Vol.) Is .
The pair producing virtual as well as real image is
The outer sphere of a spherical air capacitor is earthed. For increasing its capacitance
The order of magnitude of the diameter of the earth is (Diameter of the earth is $1.28 \times 10^7\,m$)
The orbital speed of geostationary satellite is
The optical density of turpentine is higher than that of water while its mass density is lower. Figure shows a layer of turpentine floating over water in a container. For which one of the four rays incident on turpentine in figure, the path shown is correct?
The one which is not the unit of length is
The numerical value of coefficient of linear expansion is independent of units of a) length b) temperature c) area d) mass
The number of capital letters such as $A, B, C, D$ ... which are not laterally inverted by a plane mirror?
The nucleus of helium atom contains two protons that are separated by distance $3.0 \times 10^{-15}\, m$. The magnitude of the electrostatic force that each proton exerts on the other is
The non-expansion work of a system
The net magnetic moment of two identical magnets each of magnetic moment $M_0$, inclined at $60^{\circ}$ with each other is
The neutral point in the magnetic field of a horizontally placed bar magnet is a point where the magnetic field due to the bar magnet is :
The neutral temperature of a thermocouple is $300^\circ C.$ What is the inversion temperature, if the temperature of cold junction is $10^\circ C?$
The nearer point of hypermetropic eye is $40\, cm$. The lens to be used for its correction should have the power
The natural frequency of an LC - circuit is 1,25,000 cycles per second. Then the capacitor C is replaced by another capacitor with a dielectric medium of dielectric contant k. In this case, the frequency decreases by 25 kHz. The value of k is
The motor of an angle is rotating about its axis with an angular velocity of 100 rev/m. It comes to rest in 15 s, after being switched off. Assuming constant angular deceleration. What are the numbers of revolutions made by it before coming to rest?
The motion of a torsional pendulum is
The motional emf produced across a wire moving through a magnetic field does not depend on its: