Question # 1

For obtaining appreciable extension, the wire should be

Choose an answer

Short and thin

Long and thin

Short and thick

Long and thick

A bullet is shot from a rifle. As a result the rifle recoils. The kinetic energy of rifle as compared to that of bullet is

Choose an answer

Less

Greater

Equal

Cannot be concluded

When the length of a microscope tube increase, its magnifying power

Choose an answer

Decreases

Increases

Does not Change

May increase or decrease depending on the observer and the place of observation

A planet is observed by an astronomical refracting telescope having an objective of focal length 16 m and an eyepiece of focal length 2 cm.

Choose an answer

The distance between the objective and the eyepiece is 8 m

The angular magnification of the planet is 200

The image of the planet is inverted

The objective is smaller than the eyepiece

If a diamagnetic substance is brought near north or south pole of a bar magnet it is

Choose an answer

Attracted by the poles

Repelled by the poles

Repelled by north pole and attracted by the south pole

Attracted by the north pole and repelled by the south pole

The incorrect statement regarding the lines of force of the magnetic field B is

Choose an answer

Magnetic intensity is a measure of lines of force passing through unit area held normal to it

Magnetic lines of force form a close curve

Inside a magnet, its magnetic lines of force move from north pole of a magnet towards its south pole

Due to a magnet magnetic lines of force never cut each other

The velocity of falling raindrops attains limited value because of

Choose an answer

Up thrust of air

Viscous force exerted by air

Surface tension effect

Air currents atmosphere

Which of the modulus of elasticity is involved in compression a rod to decrease its length?

Choose an answer

Young's modulus

Bulk modulus

Modulus of rigidity

None of the above

The dimensional formula of torque is:

Choose an answer

[ML²T^-2]

{MLT^-2]

[ML^-1T^-2]

[ML^-2T^-2]

A charge Q is divided into two parts q and Q - q and separated by a distance R. The force of repulsion between them will be maximum when:

Choose an answer

q = Q/4

q = Q/2

q = Q

None of these

A 2 kg body and a 3 kg body have equal momentum. If the kinetic energy of 3 kg body is 10 J, the KE of 2 kg body will be

Choose an answer

6.66 J

15 J

22.5 J

45 J

In a voltmeter the conduction takes place due to

Choose an answer

Electrons only

Holes only

Electrons and holes

Electrons and ions

Planck's constant has the dimensions of:

Choose an answer

Energy

Momentum

Frequency

Angular momentum

To explain his theory Bohr used

Choose an answer

Conservation of linear momentum

Conservation of angular momentum

Conservation of quantum frequency

Conservation of energy

The mass of a proton is 1847 times that of an electron. An electron and a proton are projected into a uniform electric field in a direction at right angles to the direction of the field with the same initial kinetic energy.The

Choose an answer

Both the trajectories will be equally curved

The proton trajectory will be less curved than the electron trajectory

The electron trajectory will be less curved than the proton trajectory

The relative curving of the trajectories will be dependent on the value of the initial kinetic energy

More Classes

Other Links

NAT II Physical Science Physics MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer