NEET 2001 Physics Paper: AIPMT

A capacitor of capacity C has reactance X. If capacitance and frequency become double then reactance will be

The interplanar distance in a crystal is 2.8 $\times$ 10$-$8 m. The value of maximum wavelength which can be diffracted

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

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 m2 then potential gradient will be

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

In Thomson mass spectrograph $\vec{E} \perp \vec{B}$then the velocity of electron beam 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

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 importance of ozone layer is

A dipole of dipole moment $\vec{p}$is placed in uniform electric field $\vec{E}$then torque acting on it is given by

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

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

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

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

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

A 1 kg stationary bomb is exploded 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

Tangent galvanometer is used to measure

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

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)

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

An electron having mass m and kinetic energy E enters a uniform magnetic field B perpendicularly, then its frequency will be

Half life of a radioactive element is 12.5 hour and its quantity is 256 g. After how much time its quantity will remain 1 g?

Half-life period of a radioactive substance is $6\text{ h}$. After $24\text{ h}$ activity is $0.01\ \mu\text{C}$, what was the initial activity?

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 released in nuclear fission is due to

X(n, $\alpha$) ${}_{3}^{7}$Li, then X will be

Which rays contain (positive) charged particles?

The total energy of particle performing SHM depend on

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,

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

The given truth table is for which logic gate

$A \quad B \quad Y$

$1 \quad 1 \quad 0$

$0 \quad 1 \quad 1$

$1 \quad 0 \quad 1$

$0 \quad 0 \quad 1$

In bcc structure of lattice constant $a$, the minimum distance between atoms is

The current in the circuit will be

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

The dimensions of Planck's constant equals to that of

The equation of a wave is represented by

y $=$ 10$-$4 sin(100t $-\frac{x}{10}$) m. then the velocity of wave will be

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 difference between them is

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

A ray of light travelling in air has 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?

A particle is projected making an angle of 45° 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