JIPMER Full Mock Test - 12 - NEET MCQ

When a resistance of 2 Ω is connected across the terminals of a cell, the current is 0.5 amperes. When the resistance is increased to 5 ohm, the current is 0.25 amperes. The internal resistance of the cell is

A particle is moving on a circular path with constant speed, then its acceleration will be

A capacitor is having a capacity of 2 pF. Electric field across the capacitor is changing with a value of 10¹² V/s. The displacement current is

A 10 m long wire of 20Ω resistance is connected in series with a battery of 3 volt e.m.f. (negligible internal resistance) and a 10Ω resistance. The Potential gradient of wire in volt per meter is

If the current is halved in a coil, then the energy stored is how much times the previous value

Three capacitors each of capacitance C and of breakdown voltage V are joined in series. The capacitance and breakdown voltage of the combination will be:

The capacitance of an isolated spherical conductor of radius 15 cm is

If 1000 droplets each of charge q and radius r are mixed to form a big drop, then the potential of big drop, as compared to small droplet will be

A block of weight 200N is pulled along a rough inclined plane of inclination 45^o with the horizontal. If the coefficient of friction is 0.5, the retardation is

A man inside an artificial satellite feels weightlessness because the force of attraction due to earth is

Relation between the colour and the temperature of a star is given by

If the radius of earth's orbit is made 1/4, the duration of an year will become

Mean kinetic energy per degree of freedom of gas molecules is

In the Young's double slit experiment, the central bright fringe can be identified

A wire is wound in the form of a solenoid of length and diameter d. When a strong current is passed through the solenoid there is tendency to

Two concentric circular coils of ten turns each are situated in the same plane. Their radii are 20 cm and 40 cm and they carry respectively 0.2 A and 0.3 A currents in opposite direction. The magnetic field in tesla at the centre is

The magnetic field at the centre of current I carrying loop of radius r, is

To shield an instrument from external magnetic field, it is placed inside a cabin made of

The field of a short bar magnet at a distance of 1 m on its axial line is 1 oersted. At a distance of 2 m on the same line, the intensity in oersted will be

Bernoulli's theorem is based on the law of conservation of

A magnet of magnetic moment M is cut into two equal parts. The two parts are placed perpendicular to each other so that their north poles touch each other. The resultant magnetic moment is

The excess pressure inside one soap bubble is three times that of a second bubble. The ratio of the volumes of the first bubble to that of second bubble is

The moment of inertia of a meter scale of mass 0.6 kg about an axis perpendicular to the scale and located at the 20 cm position on the scale in kg m² is (Breadth of the scale is negligible)

A metallic wire is suspended by attaching some weight to it. If α is the longitudinal strain and Y is Young's modulus, then the ratio between elastic potential energy and the energy density is equal to

A force of 100 dynes acts on mass of 5 gm for 10 sec. The velocity produced is

A body falling for seconds covers a distance S equal to that covered in next second. Taking g=10m/s²,S=

Number of neutrons in C¹² and C¹⁴ are