List of top Physics Questions asked in VITEEE

A convex lens has power \( P \). It is cut into two halves along its principal axis. Further, one piece (out of the two halves) is cut into two halves perpendicular to the principal axis (as shown in figure). Choose the incorrect option for the reported pieces.
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A Carnot engine takes \( 3 \times 10^6 \) cal of heat from a reservoir at \( 627^\circ C \), and gives it to a sink at \( 27^\circ C \). The work done by the engine is:
Assertion :
The binding energy of the nucleus increases with the increase in atomic number. 
Reason :
Heavier elements have a greater number of non-radioactive isotopes than radioactive isotopes.
Two identical blocks A and B, each of mass 'm' resting on a smooth floor are connected by a light spring of natural length L and spring constant K, with the spring at its natural length. A third identical block 'C' (mass m) moving with a speed v along the line joining A and B collides with A. the maximum compression in the spring is
Light of wavelength \( \lambda_A \) and \( \lambda_B \) falls on two identical metal plates A and B respectively. The maximum kinetic energy of photoelectrons is \( K_A \) and \( K_B \) respectively. Given that \( \lambda_A = 2\lambda_B \), which one of the following relations is true?
A parallel plate air capacitor of capacitance \( C \) is connected to a cell of emf \( V \) and then disconnected from it. A dielectric slab of dielectric constant \( K \), which can just fill the air gap of the capacitor, is now inserted in it. Which of the following is incorrect?
The half-life of radioactive radon is 3.8 days. The time at the end of which \(\frac{1}{20}th\) of the Radon sample will remain undecayed is (given log10e=0.4343)
A sinusoidal voltage of amplitude 25 V and frequency 50 Hz is applied to a half-wave rectifier using a P-N junction diode. No filter is used, and the load resistor is \( 1000\Omega \). The forward resistance \( R_f \) of the ideal diode is \( 10\Omega \). The percentage rectifier efficiency is:
A current \( I \) flows along the length of an infinitely long, straight, thin-walled pipe. Then:
When you walk through a metal detector carrying a metal object in your pocket, it raises an alarm. This phenomenon works on:
Potential energy as a function of \(r\) is given by \( U = \frac{A}{r^{10}} - \frac{B}{r^5} \), where \(r\) is the interatomic distance, \(A\) and \(B\) are positive constants. The equilibrium distance between the two atoms will be:
The escape velocity of a body depends upon mass as:
Angular momentum of the particle rotating with a central force is constant due to
A stone of mass \( m \), tied to a string is being whirled in a vertical circle with a uniform speed. The tension in the string is:
Zener breakdown occurs in a p − n junction having p and n both:
The recoil speed of a hydrogen atom after it goes from \( n = 5 \) state to \( n = 1 \) state will be:
An object is thrown vertically upwards. At its maximum height, which of the following quantity becomes zero?

The electric potential \( V(x) \) in a region around the origin is given by \( V(x) = 4x^2 \, {volts}. \) .The electric charge enclosed in a cube of 1m side with its center at the origin is (in coulomb)

A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be
In a region, steady and uniform electric and magnetic fields are present. These two fields are parallel to each other. A charged particle is released from rest in this region. The path of the particle will be a

A thermodynamic system is taken from an original state D to an intermediate state E by the linear process shown in the figure. Its volume is then reduced to the original volume from E to F by an isobaric process. The total work done by the gas from D to E to F will be:
 

The magnetic field of a plane electromagnetic wave is given by: \[ \vec{B} = 2 \times 10^{-8} \sin \left(0.5 \times 10^3 x + 1.5 \times 10^{11} t \right) \hat{j} \, {T}. \] {The amplitude of the electric field would be:}
A particle is moving with a velocity \( \vec{v} = K (y \hat{i} + x \hat{j} )\), where \( K \) is a constant. The general equation for its path is:
The self-induced emf of a coil is 25 volts. When the current in it is changed at uniform rate from 10A to 25 A in 1s, the change in the energy of the inductance is:
A vertical electric field of magnitude \( 4.9 \times 10^5 \, {N/C} \) just prevents a water droplet of a mass \( 0.1 \, {g} \) from falling. The value of charge on the droplet will be: (Given \( g = 9.8 \, {m/s}^2 \))