List of top Physics Questions asked in NEET (UG)

A body is executing simple harmonic motion. When the displacements from the mean position is $4 \,cm$ and $5 \,cm$, the corresponding velocities of the body is $10 \,cm/sec$ and $8\, cm/sec$. Then the time period of the body is
The velocity of charge carriers of current (about 1 ampere) in a metal under normal conditions is of the order of
A closed organ pipe (closed at one end) is excited to support the third overtone. It is found that air in the pipe has
A heavy uniform chain lies on horizontal table top. If the coefficient of friction between the chain and the table surface is 0.25 s, then the maximum fraction of the length of the chain that can hang over one edge of the table is
A car moves a distance of 200 m. It covers the first half of the distance at speed 40 km/h and the second half of distance at speed v. The average speed is 48 km/h. The value of v is
A uniform magnetic field acts right angles to the direction of motion of electrons. As a result, the electron moves in a circular path of radius 2 cm. If the speed of electrons is doubled, then the radius of the circular path will be
A deuteron of kinetic energy 50 keV is describing a circular orbit of radius 0.5 metre in a plane perpendicular to magnetic field B. The kinetic energy of the proton that describes a circular orbit of radius 0.5 metre in the same plane with the same B is
A particle of mass m = 5 is moving with a uniform speed v = 3$\sqrt 2$ in the XOY plane along the line Y = X + 4. The magnitude of the angular momentum of the particle about the origin is
In the nucleus of $_{11}Na^{23}$ , the number of protons, neutrons and electrons are
Ratio of intensities of two waves are given by 4 : 1. Then ratio of the amplitudes of the two waves is
The angular velocity and the amplitude of a simple pendulum is $\omega$ and a respectively. At a displacement x from the mean position if its kinetic energy is T and potential energy is V, then the ratio of T to V is
The depletion layer in the p-n junction region is caused by
The dimensional formula of permeability of free space $\mu_0$ is
Two trains move towards each other with the same speed. The speed of sound is 340 m/s. If the height of the tone of the whistle of one of them heard on the other changes to 9/8 times, then the speed of each train should be
When milk is churned, cream gets seperated due to
A certain body weighs $22.42\,g$ and has a measured volume of $4.7\,cc$. The possible error in the measurement of mass and volume are $0.01\,gm$ and $0.1\,cc$. Then maximum error in the density will be
An electron with (rest mass $m_0$) moves with a speed of 0.8 c. Its mass when it moves with this speed is
A $600\, kg$ rocket is set for a vertical fring. If the exhaust speed is $1000 \,ms^{-1}$ the mass of the gas ejected per second to supply the thrust needed to overcome the weight of rocket is
In which of the following, emission of electrons does not take place
The composition of two simple harmonic motions of equal periods at right angle to each other and with a phase difference of $\pi$ results in the displacement of the particle along
A mass m is suspended from the two coupled springs connected in series. The force constant for springs are $ k_1 $ and $ k_2$. The time period of the suspended mass will be
How much water a pump of 2 kW can raise in one minute to a height of 10 m? (take g = 10 m/s$^2$)
Velocity of sound waves in air is 330 m/s. For a particular sound wave in air, a path difference of 40 cm is equivalent to phase difference of $1.6\, \pi$. The frequency of this wave
In the network shown in figure each resistance is $1\, \Omega.$ The effective resistance between A and B is
A car covers the first half of the distance between two places at 40 km/h and another half at 60 km/h. The average speed of the car is