List of top Physics Questions asked in NEET (UG)

A whistle revolves in a circle with angular speed $\omega= 20 \,rad/sec$ using a string of length 50 cm. If the frequency of sound from the whistle is 385 Hz, then what is the minimum frequency heard by an observer which is far away from the centre :-$\left( V _{\text {sound }}=340 m / s \right)$

A wave travelling in positive X-direction with a = 0.2 mt., velocity = 360 mt/sec. and $\lambda= 60 \,mts, $ then correct expression for the wave is:-

A solid sphere of radius R is placed on smooth horizontal surface. A horizontal force F is applied at height h from the lowest point. For the maximum acceleration of centre of mass, which is correct?

The resistance of each arm of the wheat stone bridge is 10 ohms. A resistance of 10 ohm is connected in series with a galvanometer then the equivalent resistance across the battery will be :

Two particles having mass M and m are moving in a circular path having radius R and r. If their time period are same then the ratio of angular velocity will be

A ray of light travelling in air have wavelength $\lambda$ , frequency n , velocity v and intensity I. If this ray enters into water then these parameters are ${\lambda} $' n ' , v ' and I' respectively. Which relation is correct from following?

A capacitor of capacity C and reactance X if capacitance and frequency become double then

Tangent galvanometer is used to measure

A given ray of light suffers minimum deviation in an equilateral prism P. Additional prisms Q and R of identical shape and of the same material as P are now added as shown in the figure. The ray will suffer

In Thomson mass spectrograph $\vec{E}\perp \vec{B} $ then the velocity of electron beam will be

A photo-cell is illuminated by a source of light,which is placed at a distance d from the cell.If the distance become d/2, then number of electrons emited per second will be

Half life of radioactive element is 12.5 Hour and its quantity is 256 gm. After how much time its quantity will remain 1 gm : -

For a coil having L = 2 mH, current flow through it is $I= t^2e^{-l}$ then, the time at which emf become zero

A particle is thrown vertically upward. Its velocity at half of the height is 10 m/s. Then the maximum height attained by it (g = 10 m/s^2 )

Copper and silicon is cooled from 300 K to 60 K, the specific resistance

If specific resistance of a potentiometer wire is $10^{-7}\, \Omega m$ and current flow through it is 0.1 amp., cross-sectional area of wire is $10^{-6}\, m^2$ then potential gradient will be

With what velocity should a particle be projected so that its height becomes equal to radius of earth?

The dimensions of Planck constant equals to that of

A black body has wavelength $\lambda_m$ corresponding to maximum energy at 2000 K. Its wavelength corresponding to maximum energy at 3000 K will be:

An electron having mass m and kinetic energy E enter in uniform magnetic field B perpendicularly, then its frequency will be

If the energy of a hydrogen atom in nth orbit is $E_n$, then energy in the nth orbit of a singly ionized helium atom will be

A cylindrical rod having temperature T1 and T2 at its end. The rate of flow of heat Q1 cal/sec. If all the linear dimension are doubled keeping temperature remain const. then rate of flow of heat Q2 will be

Two waves having equation $x_1=a \sin(\omega t-kx+\phi_1),$ $ x_2=a \sin (\omega t-kx +\phi_2)$ If in the resultant wave the frequency and amplitude remain equal to amplitude of superimposing waves, the phase difference between them is