Question # 1

A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of:

Choose an answer

0.5 m/sec2

5 m/sec2

1.5 m/sec2

9.8 m/sec2

.Depletion region contains:

Choose an answer

Protons

Positive ions

Negative ions

Both (B) and (C)

Both (A) and (C)

A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding?

Choose an answer

4.2 m

8.4 m

12.6 m

none of these

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

Choose an answer

KHz

MHz

GHz

BHz

The band above the valence band is called

Choose an answer

high energy band

conduction band

empty band

none of them

One radian is equal to:

Choose an answer

30.3°

45.3°

50.3°

57.3°

The process of formation of spectrum is called:

Choose an answer

Interference

Spectroscopy

Dispersion

Reflection

Botha (A) and (D)

When a conductoris moved across a magnetic field:

Choose an answer

Emf induced its similar to that of a battery

Emf induced gives rise to induced current

An emf is induced across its ends

All are correct

None of these

Glycerin has viscosity _____ the viscosity of water:

Choose an answer

More than

Equal to

Less than

None of these

The time required for a radioactive material to decrease in active by one half is called

Choose an answer

half time

half life

disintegration time

mean life

The force experienced by charged particle is maximum, if it moves

Choose an answer

parallel to magnetic field

perpendicular to magnetic field

opposite to the magnetic field

none of these

The third band of the colour code:

Choose an answer

Gives the number of zeroes

Is decimal multiplier

Gives the resistance tolerance

Gives the third digit

Both (A) and (B)

In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.

Choose an answer

photo diode

light emitting diode

photo voltaic cell

all of them

The whole shape of the black body spectrum for all wavelengths was explained by the formula proposed by

Choose an answer

Max plank

Newton

Einstein

J.J. Thomson

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

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

Moment of linear momentum is called.

Choose an answer

Moment arm

Moment of inertia

Inertia

Angular momentum

The concept of entropy was introduced into the study of thermodynamics in

Choose an answer

1856

1865

1656

1685

A thermistor is a resistor which is:

Choose an answer

Light Sensitive

Heat Sensitive

Sound Sensitive

All of these

None of these

If 2.2 kilowatt power is transmitted through a 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

Wave nature of particle was proposed by

Choose an answer

Einstein

Plank

De-Brogile

Max well

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

Choose an answer

pair production

photoelectric

Compton effect

None of these

The energy of a photon is represented by

Choose an answer

h/c²

h/T

hc²

hf/c²

A sinusoidally alternating voltage or current can be graphically represented by a:

Choose an answer

Vector

Rotating vector

Clockwise vector

Anticlockwise voltage vector

None of these

An electric field is generated along the wire when:

Choose an answer

Its resistance is very high

A constant potential is maintained across the wire

Net current through the wire is zero

A constant potential difference is maintained across the wire

Either (A) or (D)

The value of viscosity of a fluid is dependent on (at constant temperature)

Choose an answer

the fluid itself

the fluid and its container

anything in contact with the fluid

all of the above

The projectile attains maximum horizontal range when it is projected at an angle of

Choose an answer

30°

45°

60°

75°

A transistor has:

Choose an answer

One region

Two regions

Three regions

Four regions

None is correct

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 silicon crystal is doped with a pentavalent element, then the atom of the pentavalent element is known as

Choose an answer

acceptor

donor

either of them

none of them

The velocity given to a body to go out of the influence of earth's gravity is known as:

Choose an answer

Terminal velocity

Orbital velocity

Escape velocity

None of these

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