JIPMER Physics Mock Test - 9 - NEET MCQ

A solenoid of length 20 cm area of cross-section 4 cm² and having 4000 turns is placed inside another solenoid of 2000 turns having a cross-section area 8 cm² and length 10 cm. The mutual inductance of the system is

A 1 kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed of 4 m/sec. The tension in the string is 6 N,when the stone is at (g = 10m/sec²)

There are three resistance coils of equal resistance. The maximum number of resistances you can obtain by connecting them in any manner you choose, being free to use any number of the coils in any way is

A cell supplies a current of 0.9 A through a 2 Ω resistor and a current of 0.3 A through 7 Ω resistor. The internal resistances of the cell is

The core used in a transformer is laminated in order to

Out of the folowing statement which is NOT true?

When we touch the terminals of a high voltage capacitor, even after a high voltage has been cut off, then the capacitor has a tendency to

The capacity of a condenser 'A' is 10 μF and it is charged by a battery of 100V. The battery is disconnected and the condenser is connected to a condenser 'B'. The common potential is 40V. The capacity of 'B' is

Consider a car moving along a straight horizontal road with a speed of 72 km/h. If the coefficient of static friction between the tyres and the road is 0.5 the shortest distance in which the car can be stopped is [g=10 ms^-2]

The mass of moon is about 1.3% of mass of the earth. Compared to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on the earth

If g is the acceleration due to gravity at the earth's surface and r is the radius of the earth, the escape velocity for the body to escape out of earth's gravitational field is

Consider the following statements
Assertion (A) : Woolen clothes keep the body warm in winter
Reason (R) : Air is a bad conductor of heat
Of these statements

In the ideal double slit experiment, when a glass plate of refractive index 1.5 and thickness t is introduced in the path of one of the interfering beams of wavelength λ, the intensity at the position of central max. remains unchanged. Minimum thickness of glass plate is

Maxwell's law of distribution of velocities shows that:

A cyclotron oscillator frequency is 10 MHz. If radius of its dees 60 cm, then magnetic field for accelerating the protons is (Given e = 1.6 x 10^-19C, mp = 1.67 x 10^-27 kg)

A positive charge is moving upwards in a magnetic field which is towards north. The particle will be deflected towards

A long solenoid of length L has a mean diameter D. It has n layers of winding of N turns each. If it carries a current I, the magnetic field at its centre will be

Curie temperature is the temperature above which

At the magnetic north pole of the earth, the value of the horizontal component of earth's magnetic field and angle of dip are respectively

A bar magnet of magnetic moment 6.4 A-m² is placed in a uniform magnetic field of 0.4 T. What is the torque acting on the magnet, when its axis makes an angle of 60^o with the magnetic field?

Air is streaming over both the aeroplane wings such that its speed is 85 m-s^-1 over the upper surface and 75 m-s^-1 at the lower surface. If the wings are 10 m long and have an average width of 2 m, then lift of the wind on aeroplane is (Take density of air = 1.5 kg-m^-3)

The surface tension of soap solution is 25 x 10^-3 N-m^-1. The excess pressure inside a soap bubble of diameter 1 cm is

A copper wire of length 4 m and area of cross-section 1.2 cm² is stretched with a force of 4.8 x 10³ N. If the Young's modulus for copper is 1.2 x 10¹¹ N-m^-2, then increase in the length of the wire will be

A solid cylinder has mass M, length L and radius R. The moment of inertia of this cylinder about a generator is

A body A starts from rest with an acceleration a₁. After 2 s, another body B starts from rest with an acceleration a₂. If they travel equal distances in the 5th second, after the start of A, then the ratio a₁ : a₂ is equal to is equal to

A wagon 1000 kg is moving with a velocity 50 km/h on smooth horizontal rails. A mass of 250 kg is dropped into it. The velocity with which it moves now is

The minimum magnifying power of a telescope is M. If the focal length of its eye-lens is halved, the magnifying power will become