AIPMT 2001

Mn and Mp represent the mass of neutron and proton respectively. An element having mass M has N neutrons and Z protons, then the correct relation will be

Energy per unit volume for a capacitor having area A and separation d kept at potential difference V is given by

A disc is rolling, the velocity of its centre of mass is vcm. Which one will be correct?

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 m2 then potential gradient will be

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

The resistance of each arm of the Wheatstone's bridge is 10 ohm. A resistance of 10 ohm is connected in series with a galvanometer then the equivalent resistance across the battery 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 emitted per second, will be

In Thomson mass spectrograph \(\overrightarrow E \bot \overrightarrow B\) then the velocity of electron beam will be

Which one among the following shows particle nature of light?

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

Biological inportance of ozone layer is

A charge Q\(\mu\)C is placed at the centre of a cube, the flux coming out from each face will be

A dipole of dipole moment \(\overrightarrow p\) is placed in uniform electric field \(\overrightarrow E\) then torque acting on it is given by

Optical fibre are based on

A disc is placed on a surface of pond which has refractive index 5/3. A source of light is placed 4 m below the surface of liquid. The minimum radius of disc needed so that light is not coming out is,

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

A scientist says that the efficiency of his heat engine which work at source temperature 127oC and sink temperature 27oC is 26%, then

A cricketer catches a ball of mass 150 gm in 0.1 sec moving with speed 20 m/s, then he experiences force of

On the horizontal surface of a truck a block of mass 1 kg is placed (m = 0.6) and truck is moving with acceleration 5 m/sec2 then the frictional force on the block will be

A 1 kg stationary bomb is exploted in three parts having mass 1 : 1 : 3 respectively. Parts having same mass move in perpendicular direction with velocity 30 m/s, then the velocity of bigger part will be

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 3 m. the efficiency of pulley system will be

Among which the magnetic susceptibility does not depened on the temperature ?

Tangent galvanometer is used to measure

If \(\left| {\overrightarrow A + \overrightarrow B } \right| = \left| {\overrightarrow A } \right| + \left| {\overrightarrow B } \right|\) then angle between A and B 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 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/s2)

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

If number of turns, area and current through a coil is given by n, A and \(i\) respectively then its magnetic moment will be

The total energy of particle performing SHM depend on

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 constant, then rate of flow of heat Q2 will be

The given truth table is for which logic gate
              \(\matrix{ A & B & Y \cr 1 & 1 & 0 \cr 0 & 1 & 1 \cr 1 & 0 & 1 \cr 0 & 0 & 1 \cr }\)

For a common base circuit if \({{{I_C}} \over {{I_E}}}\) = 0.98 then current gain for common emitter circuit will be

The current in the circuit will be

The dimensions of Planck's constant equals to that of

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 fro...

Two waves having equation x1 = \(a\)sin(\(\omega\)t \(-\) kx + \(\phi\)1), x2 = asin(\(\omega\)t \(-\)kx + \(\phi\)2). If in the resultant wave the frequency and amplitude remain equal to amplitude of superimposing waves, the phase diff...

If the tension and diameter of a sonometer wire of fundamental frequency n is doubled and density is halved then its fundamental frequency will become

The equation of a wave is represented by
y \(=\) 10\(-\)4 sin(100t \(-\) \({x \over {10}}\)) m. then the velocity of wave will be

A particle is projected making an angle of 45o with horizontal having kinetic energy K. The kinetic energy at highest point will be

A child is sitting on a swing. Its minimum and maximum heights from the ground 0.75 m and 2 m respectively, its maximum speed will be

Two springs A and B having spring constant KA and KB (KA = 2KB) are stretched by applying force of equal magnitude. If energy stored in spring A is EA then energy stored in B will be