Question # 1

An example of photoconductor is:

Choose an answer

Boron

Carbon

Iron

Aluminum

Selenium

An ideal choke (used along with fluorescent tube) would be

Choose an answer

A pure resistor

A pure capacitor

A pure inductor

A combination of an inductor and a capacitor

The direction of the linear momentum is the direction of

Choose an answer

speed

velocity

weight

none of them

In bringing an electron towards another electron, electrostatic potential energy of system

Choose an answer

Decreases

Increases

Remains uncharged

Becomes zero

The reactance of a coil when used in the domestic A.C. power supply (220 volts, 50 cycles per second) is 50 ohms. The inductance of the coil is nearly

Choose an answer

2.2 henry

1.6 henry

0.22 henry

0.16 henry

Braking radiation causes:

Choose an answer

Continuous spectrum

Line Spectrum

Band spectrum

Discrete specturm

All of these

A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle:

Choose an answer

Circular motion, circumference

Vibrator, chord

SHM, diameter

SHM, circumference

The branch of physics which deals with the structure and properties of solids is called:

Choose an answer

Plasma physics

Solid state physics

Any of above

Astrophysics

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Choose an answer

circular

elliptical

cycloid

straight line

Curie is a unit of

Choose an answer

reluctance

resistivity

binding energy

radioactivity

A rheostat can e used:

Choose an answer

As variable resistor

As potential divider

For varying the current

All of these

None of these

Resistance of a conductor is increased, the currant will

Choose an answer

Decrease

Increase

Remain the same

None of these

Angular frequency 'w' is basically a characteristics of

Choose an answer

linear motion

circular motion

both of them

none of them

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Choose an answer

BACosѲ

Zero

BA

BA sinѲ

None of these

The smooth or steady stream-line flow is know as

Choose an answer

Laminar flow

Turbulent flow

Both a and b

None of the above

The input resistance of the OP-AMP is the resistance between the

Choose an answer

(-) input and output

(+) input and output

(-) and (+) inputs

between any inputs

Electrons are

Choose an answer

positive charged

negatively charged

massless

neutral

The special theory of relativity is based on the

Choose an answer

one postulate

two postulates

three postulates

four postulates

Mass of proton is of order of

Choose an answer

10^-31gm

10^-27kg

10^-24gm

10⁺²⁷kg

de-Broglies hypthesis was experimentally verified by

Choose an answer

Maxwell

Compton

Einstein

Davison and Germer

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

Choose an answer

a rocket

an aeroplane

a projectile

a ballon

Work done is maximum when angle between force and displacement is:

Choose an answer

0°

90°

180°

None of these

The maximum possible error in the reading for a meter rod with least count 1 mm is:

Choose an answer

0.005 mm

0.05mm

0.5mm

5.0mm

Tick the conservation force:

Choose an answer

Tension in a string

Air resistance force

Elastic spring

Frictional force

Light year is a unit of:

Choose an answer

Time

Distance

Velocity

Intensity of light

In the expression of force experienced by electron, the direction of both v and B are

Choose an answer

parallel

zero

perpendicular

none of them

An emf is set up in a conductor when it:

Choose an answer

Is kept in a magnetic field

Is kept in an electric field

Moves across a magnetic field

Both A and B

None of these

Electric field lines emerge from the charge in:

Choose an answer

One dimension

Two dimensions

Three dimensions

Four dimensions

None of them

The unit of resistivity is

Choose an answer

ohm

ohm-m²

ohm-meter

ohm-m^-1

An airplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically above a point A on the ground, a bomb is released from it. The bomb strikes the ground, at point B. The distance AB is

Choose an answer

1200 m

0.33 km

3.33 km

33 km

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

Choose an answer

546 K

273 K

546°C

273°C

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