Question # 1

When platinum wire is heated, then at the temperature of 500 ^oC, it becomes:

Choose an answer

Yellow

Orange red

Dull red

White

Cherry red

In compressional wave,the layer of medium having reduced pressure is called:

Choose an answer

Compression

Elasticity

Node

Rarefaction

Swimming becomes possible because of______law of motion:

Choose an answer

First

Second

Third

None of these

If the object and its image are located at a distance of 5 cm from the focus of a convex lens, the focus length of the lens will be:

Choose an answer

5 cm

10 cm

20 cm

25 cm

The loudness and pitch of a sound note depends on

Choose an answer

Intensity and velocity

Frequency and velocity

Intensity and frequency

Frequency and number of harmonic

In describing functions of digital systems, a closed switch will be shown as

Choose an answer

0

1

low

any one of these

Battery is charged in motor cars, which is based on

Choose an answer

Chemical effect

Magnetic effect

Electric effect

None

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Choose an answer

constant rate

volume rate

flow rate

steady rate

If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy

Choose an answer

0 J

2 J

5 J

10 J

If 2.2 kilowatt power is transmitted through 1 10 ohm line at 22000 volt, the power loss in the form of heat will be

Choose an answer

0.1 watt

1 watt

10 watt

100 watt

Work done by the force of friction is always

Choose an answer

Positive

Zero

Negative

Maximum

Stars twinkle due to

Choose an answer

The fact that they do not emit light continuously

The refractive index of earth's atmosphere fluctuates

The Star's atmosphere absorbs its light intermittently

None of these

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

Choose an answer

Motion emf

Electrostatic emf

Induced emf

Both A and B

Both A and C

Electric field lines emerge from the charge in:

Choose an answer

One dimension

Two dimensions

Three dimensions

Four dimensions

None of them

In magnet-coil experiment, emf can be produced by:

Choose an answer

Keeping the coil stationary and moving the magnet

Keeping the magnet stationary and moving the coil

Relative motion of the loop and magnet

Any one of above

All above

A weakly damped system has fairly

Choose an answer

sharp resonance curve

flat resonance curve

both of them

none of them

The fluid which is incompressible and non viscous is called

Choose an answer

Ideal fluid

Non-ideal fluid

Prefect fluid

All

The quantity having dimension of ML²T⁰²will earth is:

Choose an answer

80 sec

500 sec

1.802 X 10⁴sec

Aerophysics

The device which can convert heat energy into electrical energy is called:

Choose an answer

Thermistor

Thermometer

Thermostat

Thermocouple

Both (C) and (D)

0.0001210 has ____________ significant figures.

Choose an answer

Four

Three

Seven

Eight

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Choose an answer

magnetic flux

magnetic flux density

magnetic induction

magnetic field intensity

Conventionally the angular velocity is directed at an angle of

Choose an answer

90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

When a stress changes length, it is called the

Choose an answer

compressional stress

tensile stress

shear stress

any one of them

A piece of wire along which charges are made to accelerate is known as

Choose an answer

transmitting antenna

receiving antenna

modulator

nor of these

In a charged capacitor the energy is stored in

Choose an answer

Both in positive and negative charges

Positive charges

The edges of the capacitor plates

The electric field between the plates

When temperature increase, the frequency of a tuning fork

Choose an answer

Increases

Decreases

Remains same

Increase or decreases depending on the material

The SI units of momentum is

Choose an answer

kg m s^-2

kg ms

kg m s²

N-s

The work performed on an object does not depend on

Choose an answer

Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

Nucleus of a hydrogen atom may contain:

Choose an answer

One neutron only

Two protons and one neutron

Two protons and two neutrons

Aany of above

One proton only

For measuring the angle between two vectors graphically, we join:

Choose an answer

Tails of both the vectors

Tail of one vector with the head of other

Heads of both the vectors

None of these

Which one of the following wave motions is transverse:

Choose an answer

Wave motion produced in water when a piece of stone is thrown into it

Pulling of weight hanging vertically with a spiral spring

Both of these

None of these

More Classes

Other Links

ECAT Pre General Science Physics Online Test 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

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