Question # 1

An object undergoes SHM. Its maximum equilibrium positions:

Choose an answer

Maximum

Half of its maximum value

Zero

None

The emf is measured in:

Choose an answer

Newton

Volt

J/C

Both A and B

Both B and C

The electrical forces between the molecules of a liquid are

Choose an answer

Repulsive

Attractive

Both A and B

None

A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is

Choose an answer

2100 m/s²

1400 m/s²

700 m/s²

400 m/s²

A parallel plate capacitor is first charged and then a dielectric slab is introduced between the plates. The quantity that remains unchanged is

Choose an answer

Charge Q

Potential V

Capacity

Energy U

When a shall explodes a mid-air, the total momentum of its fragments is

Choose an answer

less than the momentum of shell

equal to the momentum of shell

greater than the momentum of shell

none of them

The vast majority of solids are in the form of

Choose an answer

amorphous structure

polymeric structure

crystalline structure

all of them

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

Choose an answer

a reversible process

an irreversible process

any one of them

both of them

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

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

Choose an answer

Greater than

smaller than

Equal to

None of these

The fluid which is incompressible and non viscous is called

Choose an answer

Ideal fluid

Non-ideal fluid

Prefect fluid

All

If we increase the distance between two plates of the capacitor, the capacitance will

Choose an answer

Increase

Decrease

Remain same

First increase then decrease

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Choose an answer

2 m

1 m

0.5 m

4 m

Angular velocity is a:

Choose an answer

Scalar quantity

Vector quantity

Complex quantity

None of these

The restoring force is ______ amd opposite to the applied force within _____:

Choose an answer

Equal, elastic limit

Different, the walls of the laboratory

Different, elastic limit

None of these

A piece of fuse wire melts when a current of 15 ampere flows through it. With this current. If it dissipates 22.5 W, the resistance of fuse wire will be

Choose an answer

Zero

10Ω

1Ω

0.10Ω

A carnot cycle consists of

Choose an answer

One step

two step

three steps

four steps

Current is measured in

Choose an answer

volts

watt

ohm

ampere

The pattern of NaCl particles have a shape which is :

Choose an answer

Cubic

Body centred cubic

Simple cubic

face centred

Both (A) and (C)

Wave length of light, on the average, is given by:

Choose an answer

10^-14_m

10^-10_m

10^-6_m

10^-4_m

In the formula R = N x m for diffraction grating, N denotes:

Choose an answer

No. of lines/cm

No. of lines/meter

Total number of lines

None of above

The direction of lines of force depends upon the direction of

Choose an answer

voltage

current

charges

none of these

Huygen's theory cannot explain

Choose an answer

Diffraction

Interference

Polarization

Photoelectric effect

The inkjet printer eject a thin stream of:

Choose an answer

Water

Oil

Ink

Any above

None of these

In a moving coil galvanometer, the deflecting couple depends upon

Choose an answer

area of the coil

number of turns of coil

value of magnetic field

all of the above

In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:

Choose an answer

Adhesive force

Nuclear forces

Inter atomic cohesive force

Electromagnetic force

None of these

The temperature at which the speed of sound becomes double as was at 27°C is

Choose an answer

273°C

0°C

927°C

1027°C

A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is:

Choose an answer

+5 x 10¹J

+5 x 10²J

+5 x 10³J

+5 x 10⁴J

Practically the quantity v/c is always:

Choose an answer

less than one

Equal to one

Greater then one

all of these

None of these

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of

Choose an answer

KHz

MHz

GHz

BHz

At resonance, the impedance of RLC series circuit is

Choose an answer

Maximum

Zero

Minimum

Determinate

More Classes

Other Links

Physics ECAT Pre Engineering 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