Question # 1

The capacitance of a parallel plate capacitor depends upon

Choose an answer

Area of the plates

Separation between the plates

Medium between the plates

All of the above

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

Choose an answer

conductors

insulators

semi-conductors

all of them

The product of the pressure and volume of an ideal gas is

Choose an answer

A constant

Approximately equal to the universal gas constant

Directly proportional to its temperature

Inversely proportional to its temperature

An eV is unit of:

Choose an answer

Potential

Energy

Work

Power

Both (B) and(C)

Most practical application of electricity involve

Choose an answer

Charges at the rest

Charges in the motion

Electrons at rest

Atoms in motion

Molecules in motion

The range of wavelengths of colurs in the visible colours is

Choose an answer

140 nm to 456 nm

10 nm to 56 nm

410 nm to 656 nm

910 nm to 956 nm

None of these

A swing has

Choose an answer

one natural frequency

two natural frequencies

three natural frequencies

four natural frequencies

The use of chips in electrons is described in the form of:

Choose an answer

Yellow boxes

Black boxes

Red boxes

White boxes

Orange boxes

If a force of 0.05 N produces an elongation of 20 mm in string, then its spring constant will be:

Choose an answer

250 N m^-1

25 N m^-1

2.5 N m^-1

None of these

A potential barrier of 0.7 V exists across p-n junction made from:

Choose an answer

Germanium

Silicon

Arsenic

Gallium

Indium

The closed loop gain of the inverting amplifier is written as

Choose an answer

G = R₂/R₁

G = 1 + R₂/R₁

G = -R₂/R₁

G = 1 - R₂/R₁

Teh consumption of energy by a 1000 watt heater in half an hour is:

Choose an answer

5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

Blood is an

Choose an answer

Compressible fluid

incompressible fluid

hard

none of them

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Choose an answer

R

R²

1/R

(1/R)²

The permeability of free space is measured in:

Choose an answer

Wb/Am

Wb A/m

Am/Wb

m/Web A

None of these

If R is gas constant for 1 gram mole, C_pand C_vare specific heat for a solid then

Choose an answer

C_p- C_v= R

C_p- C_{v < R}

C_p- C_{v = 0}

C_p- C_{v > R}

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Choose an answer

Non-uniform density

uniform density

high density

low density

Which of the following is most suitable as the core of transformer

Choose an answer

Soft iron

Alinco

Steel

None of these

Acceleration of a body is positive, if the velocity of the body is

Choose an answer

constant

increasing

decreasing

none of them

A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 m/sec²in this case, find radius of the circular path:

Choose an answer

1 m

5 m

10 m

15 m

The velocity of sound at same temperature is maximum in

Choose an answer

H₂

N₂

O₂

NH₃

The special theory of relativity is based on the

Choose an answer

one postulate

two postulates

three postulates

four postulates

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. By what velocity the gun rebounds backwards?

Choose an answer

0.1 m/s

10 m/s

1 m/s

0.01 m/s

If d is the displacement of the body in time t, then its average velocity will be

Choose an answer

V_av= d x t

V_{av = t/d}

V_{av = d/t}

A ray passing through optical center of a lens, after refraction:

Choose an answer

Passes through focus

Go deviated

Retraces its path

Both B and C

Examples of moderators used in a fission reactor is/are:

Choose an answer

Water

Heavy water

Carbon

Hydrocarbon

All of these

The induced current in the loop can be Increased by

Choose an answer

Using a stronger magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All above

Both A and B

The Stephen-Boltzmann law for the black body radiation is given by

Choose an answer

E = T²

E = -T²

E = T⁴

E = -T⁴

The direction of the linear momentum is the direction of

Choose an answer

speed

velocity

weight

none of them

Work done in lower and bucket into the well is:

Choose an answer

Zero

Positive

Negative

None of these

Which of the following waves are more energetic

Choose an answer

radio waves

infrared waves

ultraviolet

γ-rays

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