NEET 2000 Physics Paper: AIPMT

A wire of resistance $R$ is connected in series with an inductor of reactance $\omega L$. Then quality factor of $RL$ circuit is

When an electron does transition from n = 4 to n = 2, then emitted line spectrum will be

Maximum frequency of emission is obtained for the transition

A capacitor is charged with a battery and energy stored is U. After disconnecting battery another capacitor of same capacity is connected in parallel to the first capacitor. Then energy stored in each capacitor is

A cell has an emf $1.5\text{ V}$. When connected across an external resistance of $2\ \Omega$, the terminal potential difference falls to $1.0\text{ V}$. The internal resistance of the cell is

The net resistance of the circuit between A and B is

Two bulbs of (40 W, 200 V), and (100 W, 200 V). Then correct relation for their resistances

In electrolysis the mass deposited on an electrode is directly proportional to

The potentiometer is best for measuring voltage, as

By photoelectric effect, Einstein proved

The energy of a photon of light is $3\text{ eV}$. Then the wavelength of photon must be

The frequency order for $\gamma$-rays (a), X-rays (b), UV rays (c) is

Electric field at centre O of semicircle of radius $a$ having linear charge density $\lambda$ given as

A charge Q is situated at the corner of a cube, the electric flux passed through all the six faces of the cube is

A body of weight 72 N moves from the surface of earth at a height half of the radius of earth, then gravitational force exerted on it will be

For a planet having mass equal to mass of the earth but radius is one fourth of radius of the earth. Then escape velocity for this planet will be

Gravitational force is required for

Two masses as shown in the figure are suspended from a massless pulley. The acceleration of the system when masses are left free is

A body of mass 3 kg hits a wall at an angle of 60° and returns at the same angle. The impact time was 0.2 sec. The force exerted on the wall

Motion of a particle is given by equation s = (3t3 + 7t2 + 14t + 8) m. The value of acceleration of the particle at t = 1 sec is

The magnetic field at centre, P will be

An electron moves with a velocity $1 \times 10^{3}\text{ m/s}$ in a magnetic field of induction $0.3\text{ T}$ at an angle $30^\circ$. If $\frac{e}{m}$ of electron is $1.76 \times 10^{11}\text{ C/kg}$, the radius of the path is nearly

The half-life of a radioactive material is $3\text{ h}$. If the initial amount is $300\text{ g}$, then after $18\text{ h}$, it will remain

The relation between $\lambda$ and T1/2 as (T1/2 $\rightarrow$ half life)

Nuclear fission is best explained by

For the given reaction, the particle X is

${}_{6}C^{11} \rightarrow {}_{5}B^{11} + \beta^{+} + X$

Two masses $M$A and $M$B are hung from two strings of length $l$A and $l$B respectively. They are executing SHM with frequency relation $f$A = 2$f$B, then relation

The bob of simple pendulum having length $l$, is displaced from mean position to an angular position q with respect to vertical. If it is released, then velocity of bob at equilibrium position

Two projectiles of same mass and with same velocity are thrown at an angle 60o and 30o with the horizontal, then which will remain same

A solid sphere and a hollow sphere are thrown horizontally from a cliff with equal velocities, respectively. Then which sphere reaches first on earth?

The width of river is 1 km. The velocity of boat is 5 km/hr. The boat covered the width of river along the shortest path in 15 min. Then the velocity of river stream is

For a plano convex lens ($\mu$ = 1.5) has radius of curvature 10 cm. It is silvered on its plane surface. Find focal length after silvering

Rainbow is formed due to

A tall man of height 6 feet, want to see his full image. Then required minimum length of the mirror will be

A bubble in glass slab ($\mu$ = 1.5) when viewed from one side appears at 5 cm and 2 cm from other side, then thickness of slab is

For the adjoining diagram, the correct relation between I1, I2, and I3 is, (I-moment of inertia)

As shown in the figure at point O a mass is performing vertical circular motion. The average velocity of the particle is increased, then at which point will the string break

The correct relation for $\alpha, \beta$ for a transistor

The truth table given below

represents

From the following diode circuit, which diode is in forward biased condition

To find out degree of freedom, the expansion is

The gases carbon-monoxide (CO) and nitrogen at the same temperature have kinetic energies $E_1$ and $E_2$ respectively. Then

The (W/Q) of a Carnot engine is 1/6, now the temperature of sink is reduced by 62oC, then this ratio becomes twice, therefore the initial temperature of the sink and source are respectively

Which pair do not have equal dimensions?

Two stationary sources each emitting waves of wavelength $\lambda$, an observer moves from one source to another with velocity u. Then number of beats heard by him

A string is cut into three parts, having fundamental frequencies n1, n2, n3 respectively. Then original fundamental frequency n related by the expression as

The equations of two waves acting in perpendicular directions are given as

x = $a$cos($\omega$t +$\delta$) and y = $a$cos($\omega$t + $\alpha$), where $\delta = \alpha + \frac{\pi}{2}$, the resultant wave represents

A mass of 1 kg is thrown up with a velocity of 100 m/s. After 5 seconds, it explodes into two parts. One part of mass 400 g comes down with a velocity 25 m/s. The velocity of other part is (Take g = 10 ms${}^{-2}$)

If $\vec{F} = \left(60\hat{i} + 15\hat{j} - 3\hat{k}\right)$ N and$\vec{v} = \left(2\hat{i} - 4\hat{j} + 5\hat{k}\right)$ m/s, then instantaneous power is