List of top Physics Questions asked in AP ECET Metallurgical Eng

The favourable condition for superconducting state of a matter is
The core of an optical fibre is surrounded by
If the maximum kinetic energy of emitted photo electrons from a metal is 0.9 eV and work function is 2.2 eV then the energy and wavelength of incident radiation are
Certain quantity of heat is supplied to a monoatomic ideal gas which expands at constant pressure. The percentage of heat that goes into work done by the gas is
A monoatomic ideal gas, initially at temperature $T_{1}$ is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to expand adiabatically to a temperature $T_{2}$ by releasing the piston suddenly. If $L_{1}$ and $L_{2}$ are the lengths of the gas column before and after the expansion, then the value of $T_{1}/T_{2}$ will be}
A gas behaves more closely as an ideal gas at
The wrong statement among the following is
The volume V of an enclosure contains a mixture of gases like 16 g of oxygen, 28 g of nitrogen and 44 g of carbon dioxide at absolute temperature T. The pressure of the mixture of gases is (R is universal gas constant)
The velocity of sound in air is 330 $ms^{-1}$. To increase the apparent frequency of the sound by 50%, the source should move towards the stationary observer with a velocity equal to}
If the total absorption of a hall is doubled, the reverberation time will
A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of
A source of sound is moving towards a wall with a speed of 20 $ms^{-1}$ The frequency of the sound produced by the source is 400 Hz. If the speed of the sound is 340 $ms^{-1}$, the beat frequency heard by a person standing near the wall is
A person standing between two parallel hills fires a gun. He hears the first echo after 1.5 sec and second echo after 2.5 sec. If the speed of a sound is 332 $ms^{-1}$, the distance between the hills is
The average power generated by a 90 kg mountain climber who climbs a summit of height 600 m in 90 minutes is ($g=10~ms^{-2}$)
A stone projected up with a velocity 'u' reaches two points A and B at a distance 'h' with velocities $u/2$ and $u/3$. The maximum height reached by the stone is
A body of mass 2 kg is moving with a constant acceleration of $(2\hat{i} + 3\hat{j} - \hat{k})ms^{-2}$ If the displacement made by the body is $(3\hat{i} - \hat{j} + 2\hat{k})$ m then the work done is
A ball is thrown at a speed of 20 m $s^{-1}$ at an angle of $30^{0}$ with the horizontal. The maximum height reached by the ball is ($g=10~ms^{-2}$)}
Two bodies of masses of 1 g and 4 g are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta is
A body of mass 16 kg explodes into two pieces of masses 4 kg and 12 kg. The velocity of the 12 kg mass is 4 $ms^{-1}$. The kinetic energy of the second piece is
The length of a vector $(3\hat{i} + \hat{j} + 2\hat{k})$ in XY plane is
If the resultant of two vectors is equal to either of vectors, the angle between them is
If the component of one vector in the direction of another vector is zero, then those two vectors are
The angle made by the vector $(2\hat{i} + 2\hat{j})$ with X-axis is
Among the following, unit less quantity is
If F is the force, S is the displacement and V is the velocity of the particle, the dimensions of the ratio $FS/V^{2}$ will be}