List of top Physics Questions asked in NEET (UG)

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

If number of turn, area and current through it is given by n, A and i respectively then its magnetic moment will be : - 

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

The interplaner distance in a crystal is 2.8 × 10-8 m. The value of maximum wavelength which can be diffracted : - 

If a ^b aX species emits firstly a positron, then two α and two β and at last one α is also after intially it fainally convets into stable ^c dY species so correct relation will be
A disc is rolling the velocity of its centre of mass is Vcm then which one will be correct
250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m then the load is lifted to 3m, the efficiency of pulley system will be

On the horizontal surface of a truck a block of mass 1 kg is placed (µ = 0.6) and truck is moving with acceleration 5 m/s2 then the frictional force on block will be : -

For a common emitter circuit if \(\frac{IC}{IE}=0.98\) then current gain for common emitter circuit will be

Following truth table represent which logic gate -

ABC
110
011
101
001

The current (I) in the circuit will be : -
 

current (I) in the circuit
Among which the magnetic susceptibility does not depend on the temperature
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?
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
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 : -
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: