Question # 1

Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10Ωwhen a potential difference of 20 V is applied between its ends

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120 C

240 C

20 C

4 C

Which one is the least multiple:

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Pico

Femto

Nano

Atto

The heat required to raise the temperature of one mole of the substance through 1 K is called

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heat capacity

specific heat capacity

molar specific heat

all of them

The earth’s potential and potential at infinity are taken:

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Equal

Zero

First is greater than the second

Second is greater than the first

Both (A) and (B)

Capacitance of two or more capacitors

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Increases in series combination

Increases in parallel combination

Remains unchanged

None of the above

The vibrations of factory floor caused by the running of heavy machinery is an example of

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free vibration

natural vibrations

forced vibrations

all of them

The device which can convert heat energy into electrical energy is called:

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Thermistor

Thermometer

Thermostat

Thermocouple

Both (C) and (D)

Electromagnetic radiation or photons interact with matter in

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two distinct ways

three distinct ways

four distinct ways

five distinct ways

A body moving with an acceleration of 5 m/sec²started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

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150 m

250 m

350 m

400 m

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

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Germanium

Silicon

Arsenic

Gallium

Indium

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

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Metal has high specific heat

Metal has high thermal conductivity

Metal has low specific heat

Metal has low thermal conductivity

An alpha particle has a charge of

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+2e

-2e

-e

+3e

The application of Bernoulli's equation is

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Torricelli's theorem

Venture relation

Binomial theorem

Both a and b

Work is a:

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Scalar quantity

Vector quantity

Base quantity

None of these

After alpha decay the atomic number of the atom

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increase by four

decreases by two

increases by two

decrease by four

Conventionally, all the distance p, q, f are measured from _____ of the lens:

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Focus

Optical center

Edges

None of these

The string of a simple pendulum should be:

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Heavy

Extensible

In-extensible

None of these

The principle characteristics of an ideal standard are

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Inaccessible and Invariable

Accessible and Invariable

Accessible and Variable

None of these

In case of metallic conductors, the charge carriers are

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Protons

Electrons

Antiprotons

Positrons

Both A and B

Which of the following options correctly states the equation of continuity for an ideal fluid?

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A₁A₂= V₁V₂

A₁/A₂= V₂/V₁

A₁/A₂= V₁/V₂

none of the above

Particles have the mass smallest of following is:

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Electron

Proton

Neutron

Quark

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

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Plasma physics

Solid state physics

Any of above

Astro physics

The irregular and unsteady flow of the fluid is called

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turbulent flow

steady flow

either of them

both of them

The current produced by moving a loop of a wire across a magnetic field is called:

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Direct current

Magnetic current

Alternating current

Induced current

None of these

0.0001210 has ____________ significant figures.

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Four

Three

Seven

Eight

Circular motion is an example of motion in:

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One dimension

Two dimensions

Three dimensions

None of these

Average value of A.C voltage during one cycle is

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1

Zero

Maximum

Variable

Battery is charged in motor cars, which is based on

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Chemical effect

Magnetic effect

Electric effect

None

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

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Four times

Thrice

Once

Twice

Electrostatics is the branch of physics which deals with the study of electro charges:

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At rest

At rest under the action of electric forces

In motion under the action of electric forces

In motion

At rest under the action of nuclear forces

The mass of the object is a quantities measure of its

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speed

velocity

acceleration

inertia

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