Question # 1

When platinum wire is heated, it appears cherry red at

Choose an answer

1600°C

900°C

1100°C

1300°C

The work is stored in the inductor as

Choose an answer

Electric potential energy

Elastic potential energy

Magnetic energy

Absolute potential energy

Which one of the following is dimensionless:

Choose an answer

Acceleration

Velocity

Density

Angle

A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is

Choose an answer

Moving forward and gaining speed

Moving forward and losing speed

Moving forward with uniform speed

Moving backward with uniform speed

According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area

Choose an answer

decreases

increases

becomes zero

none of them

The energy of the 4th orbit in hydrogen atom is

Choose an answer

2.5 ev

- 3.5 ev

-0.85 ev

-13.6 ev

While describing the motion of a simple pendulum, the frictional effects are

Choose an answer

taken into account

completely ignored

partially ignored

none of them

A body of mass 1.0 kg is falling with an acceleration of 10 m/s². Its apparent weight will be (g=10 m/s²)

Choose an answer

1.0 kg wt

2.0 kg wt

0.5 kg wt

Zero

The bonding between the semi-conductor materials is

Choose an answer

covalent

ionic

either of them

none of them

A rocket carries its own fuel in the form of

Choose an answer

liquid only

liquid or solid

liquid and solid

liquid or solid and oxygen

A full-scale deflection is obtained in a galvanometer with a current of few

Choose an answer

ampere

volts

milliampere

ohm

The temperature of gas is produced by

Choose an answer

At potential energy of its molecules

The kinetic energy of its molecules

The attractive force between its molecules

The repulsive force between its molecules

Distance covered by a freely falling body in 2 sec will be

Choose an answer

4.9 m

19.6 m

29.2 m

44.1 m

If two bulbs one of 60 W and other of 100 W are connected in parallel, then which one of the following will flow more?

Choose an answer

60 W bulb

100 W bulb

Both equally

None of these

In series RC circuit when R=X_c, then the phase angle is

Choose an answer

0°

90°

70°

45°

When body moves with increasing acceleration, its velocity time graph is a

Choose an answer

straight line

horizontal straight line

vertical straight line

curve

An object undergoes S.H.M has maximum speed when its displacement from the mean position is

Choose an answer

maximum

zero

half of the maximum value

one third of the maximum value

The charge carriers in electrolyte are positive and negative

Choose an answer

protons

electrons

ions

none of these

A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1 KV, its kinetic energy will be

Choose an answer

1840 KeV

1/1840 KeV

1 KeV

920 KeV

Solar cell converts sunlight directly into

Choose an answer

potential energy

thermal energy

mechanical energy

electrical energy

A point charge A of charge +4μC and another B of charge -1μC are placed in air at a distance 1 m apart. Then the distance of the point on the line joining the charge B, where the resultant electric field is zero, is (in m)

Choose an answer

2

1

0.5

1.5

A ball of mass m moving with uniform speed collides elastically with another stationary ball. The incident ball will lose maximum kinetic energy when mass of the stationary ball is

Choose an answer

m

2 m

4 m

Infinity

When sound waves travel from air to water which of these remains constant?

Choose an answer

Velocity

Frequency

Wavelength

All the above

When a nucleus emits an alpha particles, its charge number decreases by

Choose an answer

3

2

6

5

Internal friction of fluid is called

Choose an answer

Surface tension

Viscosity

Resistance

Cohesive force

If the radius of first orbit of hydrogen atom is 0.53° A the radius of second orbit will be

Choose an answer

2.120°A

0.212°A

21.2°A

0.14°

a

Absolute zero is considered as that temperature at which:

Choose an answer

All liquid become gases

All gases become liquid

Water freezes

None of these

A flowing liquid possess

Choose an answer

K.E

P.E

Pressure Energy

All

If the length of a simple pendulum is 0.25 m its time period would be

Choose an answer

1.0 s

2.0 s

3.0 s

4.0 s

The expression for restoring force is

Choose an answer

F=ma

F=kx

F= -kx

Kx=ma

First law of thermodynamic is special case of

Choose an answer

Law of conservation of energy

Charle's law

Law of conservation of mass

Boyle's law

More Classes

Other Links

ECAT 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