List of top Physics Questions asked in VITEEE, NEET (UG)

If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
A p-n junction diode can be used as
Depletion layer consists of
A glass slab of thickness 4 cm contains same number of waves as 5 cm thickness of water, when both are traversed by the same monochromatic light. If the refractive index of water is 4/3, what is the refractive index of glass:
Time period of a simple pendulum is 2 sec. If its length is increased by 4 times, then its period becomes
A spherical surface of radius of curvature R, separates air (refractive index 1.0) from glass (refractive index 1.5). The centre of curvature is in the glass. A point object P placed in air is found to have a real image Q in the glass. The line PQ cuts the surface at a point O and PO = O The distance PO is equal to
A ball is dropped from a height of 5 m on a planet where the acceleration due to gravity is not known. On bouncing it rises to 1.8 m. The ball loses its velocity on bouncing by a factor of
A force acts on a 3 g particle in such a way that the position of the particle as a function of time is given by x = 3t - 4t$^2$ + t$^3$, where x is in metres and t is in seconds. The work done during the first 4 second is
Two bodies of masses m and 4m are moving with equal kinetic energies. The ratio of their linear momenta is
Three equal resistors connected in series across a source of e.m.f. together dissipate 10 watt of power. What will be the power dissipated in watt if the same resistors are connected in parallel across the same source of e.m.f. ?
A transverse wave is represented by the equation $y=y_0 \sin\frac{2\pi}{\lambda}(vt-x)$ For what value of $\lambda$, is the maximum particle velocity equal to two times the wave velocity?
A vehicle, with a horn of frequency n is moving with a velocity of 30 m/s in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency $n+n_1$. Then (if the sound velocity in air is 300 m/s)
A standing wave having 3 nodes and 2 antinodes is formed between two atoms having a distance $1.21$ $�$ between them. The wavelength of the standing wave is
A ball of mass 0.25 kg attached to the ends of a string of length 1.96 m is rotating in a horizontal circle. The string will break, if tension is more than 25 N. What is the maximum velocity with which the ball can be rotated?
A bullet is fired from a gun. The force on the bullet is given by $F=600-(2\times10^5)t$ where, F is in newton and t in seconds. The force on the bullet becomes zero as soon as it leaves the barrel. What is the average impulse imparted to the bullet?
A car moving with a speed of 40 km/h can be stopped by applying brakes after at least 2 m. If the same car is moving with a speed of 80 km/h, what is the minimum stopping distance?
A coil of one turn is made of a wire of certain length and then from the same length a coil of two turns is made. If the same current is passed in both the cases, then the ratio of the magnetic inductions at their centres will be
The position of both an electron and helium atom is known within $1.0 nm$. The momentum of the electron is known within $5.0 \times 10^{-26} kg ms ^{-1}$. The minimum uncertainty in the measurement of the momentum of the helium atom is
A point Q lies on the perpendicular bisector of an electrical dipole of dipole moment p. If the distance of Q from the dipole is r (much larger than the size of the dipole), then the electric field at Q is proportional to
A mass of $1 \,kg$ is suspended by means of a thread. The system is (i) lifted up with an acceleration of $4.9 \,m$ $s^{-2}$ (ii) lowered with an acceleration of $4.9 \,m$ $s^{-2}$ . The ratio of tension in the first and second case is
A particle, with restoring force proportional to displacement and resisting force proportional to velocity is subjected to a force F sin $\omega t$. If the amplitude of the particle is maximum for $\omega = \omega_1$ and the energy of the particle maximum for $ \omega = \omega_2$, then
Complete the equation for the following fission process $_{92}U^{235}+_0n^1 \, \rightarrow _{38}Sr^{90} +.......$
The percentage weight of Zn in white vitriol [ZnSO4. 7H2O] is approximately equal to (at. mass of Zn= 65, S=32, 0=16 and H= 1)
The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river in shortest time 15 min. Then the velocity of river stream is
A semiconducting device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops to almost zero. The device may be