Question # 1

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in he form of heat will be

Choose an answer

0.1 watt

1 watt

10 watt

100 watt

The dimensional formula for the modulus of elasticity is same as that for.

Choose an answer

Stress

Strain

Velocity

Surface tension

For obtaining appreciable extension the wire should be

Choose an answer

Short and thin

Long and thin

Short and tick

Long and thick

In which case application of angular velocity is useful?

Choose an answer

When a body is rotating

When velocity of body is in a straight line

When velocity is in a straight line

None of these

The dimensional formula of toque is:

Choose an answer

[ML²T²]

[MLT²]

[ML^-1T^-2]

[ML^-2T^-2]

Two forces are acting together on an object. The magnitude of their resultant is minimum when the angle between the force is.

Choose an answer

0°

60°

120°

180°

According to Stoke's law drag force depends on

Choose an answer

Initial velocity

Final velocity

Terminal velocity

Instantaneous velocity

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

Which of the following four statements is false?

Choose an answer

A body can have zero velocity and still be accelerated

A body can have a constant velocity and still have a varying speed

A body can have a constant speed and still have a varying velocity

The direction of the velocity of a acceleration is constant

If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be

Choose an answer

1 s

2 s

3 s

4 s

The fundamental unit which has same power in the dimensional formula of surface tension and viscosity is:

Choose an answer

Mass

Length

Time

None

Absolute temperature can be calculated by

Choose an answer

Mean square velocity

Motion of the molecule

Both A and B

None of these

Which one of the following is a simple harmonic motion?

Choose an answer

Wave moving through a string fixed at both ends

Earth spinning about its own axis

Ball bouncing between two rigid vertical walls

Particle moving in a circle with uniform speed

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

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 simple harmonic motion (SHM), which of the following does not hold?

Choose an answer

To force on the particle is maximum at the ends

The acceleration in minimum at the mean position

The potential energy is maximum at the mean position

The kinetic energy is maximum at the mean position

When boron is added as an impurity to silicon, the resulting material is.

Choose an answer

n type conductor

n type semiconductor

p-type conductor

p-type semiconductor

One cannot see fog because

Choose an answer

Fog absorbs light

The refractive index of fog is infinity

Light suffers total reflection at the droplet in a fog

Light is scattered by the droplet in fog

A wire is stretched to double of its length. The strain is

Choose an answer

2

1

zero

0.5

The product of the pressure and volume of an ideal gas is

Choose an answer

A constant

Approximately equal to the universal gas constant

Directly proportional to its temperature

Inversely proportional to its temperature

Which one of the following phenomena is not explained by Hugen's construction of wavefront?

Choose an answer

Refraction

Reflection

Diffraction

Origin of sepectra

The velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is:

Choose an answer

8

4

6

7

More Classes

Other Links

Physics General Science Test Hard Mode 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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer