Question # 1

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60 km/h. His average speed will be

Choose an answer

40 km/h

48 km/h

50 km/h

60 km/h

In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie

Choose an answer

Ultraviolet

Infrared

Visible

X-ray

The average binding energy of a nucleus inside an atomic nucleus is about

Choose an answer

8 MeV

8 eV

8 Joules

8 ergs

A body moving in circular motion with constant speed has

Choose an answer

Constant velocity

Constant acceleration

Constant kinetic energy

Constant displacement

A prism splits a beam of white light into its seven constituent colors. This is so because

Choose an answer

Phase of different colors is different

Amplitude of different colors is different

Energy of different colors is different

Velocity of different colors is different

When a hydrogen atom is bombarded, the atom is excited to the n = 4 state of hydrogen atom. The energy released when the atom falls from n = 4 state to the ground state is

Choose an answer

1.275 eV

12.75 eV

5 eV

8 eV

Huygen's wave theory of light cannot explain

Choose an answer

Diffraction

Interference

Polarization

Photoelectric effect

A wire of radius r has resistance R, It it is stretched to a wire of r/2 radius, then the resistance becomes

Choose an answer

2R

4R

16R

Zero

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

The direction of induced current is such that it opposes the very cause that has produced it. This is the law of

Choose an answer

Lenz

Faraday

Kirchoff

Fleming

The angle between rectangular components of a vector is

Choose an answer

0°

60°

90°

120°

The number of translation degrees of freedom for a diatomic gas is

Choose an answer

2

3

5

6

The frequency of the incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is

Choose an answer

Double the earlier value

Unchanged

More than doubled

Less than doubled

Band spectrum is produced by

Choose an answer

H

He

H₂

Na

To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined

Choose an answer

Parallel

Antiparallel

At angle 60°

Perpendicular to each other

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