Question # 1

The body oscillates due to ______ accelerates and overshoots the rest position due to _____:

Choose an answer

Applied force , inertia

Restoring force, friction

Frictional force, inertia

Restoring force, inertia

Coulomb force, when any material medium is placed between two charges

Choose an answer

Increases

Decreases

Remain unchanged

None of these

All the valence electrons present in a crystal of silicon are bound in their orbits by

Choose an answer

Ionic bond

covalent bond

Molecular bond

Both (A) and (B)

Both (B) and (C)

What will be the ratio of the distance moved by a freely falling body from rest in 4th and 5th seconds of journey?

Choose an answer

4 : 5

7 : 9

16 : 25

1 : 1

Where the streamlines are very far apart from each other, the pressure will be

Choose an answer

low

zero

high

all of them

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

When a falling body hits ground, its KE changes to _____ energy.

Choose an answer

Potential

Chemical

Mechanical

sound and heat

According to the de-Brogile relation, an object of large mass and ordinary speed has

Choose an answer

very small wavelength

very large wavelength

very small frequency

all of these

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

Choose an answer

Magnetic field

Electrostatic field

Electromagnetic field

All of these

None of these

The phase determines the

Choose an answer

displacement

amplitude

frequency

state of motion of vibrating body

Galvanometer is a device used for the detection of

Choose an answer

voltage

current

temperature

pressure

The wave nature of light was proposed by:

Choose an answer

Newton

Thomas Young

Huygen

None of these

Radioactivity was discovered by:

Choose an answer

Becquerel

Marie curie

Pierre curie

All of them

None of these

A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:

Choose an answer

The coil is destroyed

The coil is Rotated

The coil is neither destroyed nor rotated

Both (A) and (B)

None of these

Pair production is the phenomenon in which

Choose an answer

matter is converted into energy

energy is converted into matter

light is converted into electrical energy

electrical energy is converted into light

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

Choose an answer

2

3

5

6

If we increase the length of a simple pendulum four times, its time period will become

Choose an answer

2 times

3 times

4 times

6 times

The charge per unit time through any cross-section of a conductor is called

Choose an answer

capacitance

electric power

current

potential difference

Radioactivity

Choose an answer

is exhibited more by semiconductors in general

in exhibited more by the element when they are coupled

with other radioactive elements by a covalent bond

is an atomic property of radioactive elements

A photon is considered to have

Choose an answer

Momentum

Energy

Wavelength

All of the above

The ultimate source of money sources of energy is:

Choose an answer

Sun

Air

Water

Petroleum

One joule is equal to

Choose an answer

1.6 x 10¹⁹eV

6.25 x 10¹⁸eV

1.6 x 18¹⁸eV

6.25 x 10¹⁹eV

Rice takes longest to cook

Choose an answer

In a submarine 100 m below the surface of the sea

At sea level

At Murree

At Mount Everest

A body is dropped from a tower with zero velocity, reaches ground in 4s. The height of the tower is about

Choose an answer

80 m

20 m

160 m

40 m

The work done in moving a body between two points in a conservative field is independent of the

Choose an answer

Direction

Force applied

Path followed by the body

Power

When a high energy photon interact with a metal, which of the following effect is most likely to be taken place

Choose an answer

pair production

photoelectric effect

Compton effect

None of these

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)

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

Choose an answer

-20°C

6.67°C

5°C

0°C

To turn the transistor OFF, the base current is set:

Choose an answer

At maximum value

At zero

Either (A) or (B)

All are correct

None of correct

SI unit of current describes the flow of charge at the rate of

Choose an answer

One ampere per second

One coulomb per second

One electron per second

6.25 x 10¹⁸electrons per second

Both B and D

Electron gun consist of

Choose an answer

three anodes

heating cathode

three anodes

three anodes , heating cathode, grid

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