Question # 1

When a body is lifted through a height the work done on its appears in the form of its:

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Kinetic energy

Potential energy

Elastic potential energy

Geothermal energy

After tilting if body come back to its original position then the body is in:

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Stable equilibrium

unstable equilibrium

Neutral equilibrium

Equilibrium

Base / Hypotenuse is called:

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Sin𝜽

Cos 𝜽

Tan 𝜽

Cot 𝜽

A body is in neutral equilibrium when its centre of gravity:

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Is at its highest position

Is at the lowest position

Keep its height if displaced

Is situated at its bottom

A physical quantity possesses characteristics.

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2

3

4

5

The parallel forces which have same direction are called.

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Resutant force

Like parallel force

Unlike force

Null force

The average speed of cheetah is.

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60 kmh^-1

70 kmh^-1

75 kmh^-1

80 kmh^-1

A large water reservoir heeps the temperature of nearby land moderate due to:

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Low temperature

Low specific heat of water

Less absorption of heat

Large specific heat of water

If the direction of motion of the force is perpendicular to the direction of motion of the body then work done will be:

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Maximum

Minimum

Zero

None of these

Which instrument is most suitable to measure the internal diameter of a test tube.

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Metre rule

Vernier Callipers

Measuring tape

Screw gauge

Which gas behaves as glass or polythene to radiation:

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Nitrogen

Hydrogen

Carbon di oxide

Methane

Hard disk is made of:

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Aluminium

Copper

Iron

Plastic

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2Ω

4Ω

8Ω

12Ω

The unit of spring constant is:

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m

kg

Nm²

Nm^-1

If the change of current in a circuit induces a current in another circuit, this phenomena is known as:

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Self induction

Mutual induction

Electromagnetic induction

None mutual induction

The disturbance travelling in a medium is called:

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Wave motion

Simple harmonic motion

Motion

both a ,b

High pitch means:

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High wavelength

High frequency

High time period

High energy

A capacitor stores 0.24 coulombs at 10 volts. It capacitance is:

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0.024F

0.12F

0.6F

0.8F

The rating of a fuse wire is always expressed in:

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ampere-hours

KWh

Volts

Amperes

As the temperature of a conductor rises, its resistance:

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Increases

Decreases

Does not change

None of these

Which device is used to store charge:

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Resister

Capacitor

Dielectric

Fuse

The speed of sound is air at 21 ^oC is:

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336 ms^-1

343 ms^-1

430 ms^-1

470 ms^-1

This is used for

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Co-efficient of friction

Co-efficient of expansion

Co-efficient of viscosity

Co-efficient of contraction

The light emitted from light emitting diode has wave length.

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1.1 micro meter

1.3 micro meter

1.5 micro meter

1.7 micro meter

The phenomenon of polarization of light reveals that sun light is

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Longitudinal waves

Transverse wave

Electromagnetic waves

Monochromatic wave

The SI Unit of amount of substance is

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Mole

Joule

Volt

Ohm

Velocity of sound is independent of

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Temperature

Density

Pressure

Medium

Total change in momentum of an isolated system is

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Always (+) ve

Always (-) ve

Has maximum value

Zero

When newton ring are seen through the transmitted light, then central spot is.

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Dark

Blue

Bright

Red

The lower reading of blood pressure is called.

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Systolic pressure

Diastolic pressure

Normal pressure

Non normal pressure

The Newton's formula for the speed of sound in air is

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The motion of a simple pendulum is the example of

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Vibratory motion

Rotatory motion

Periodic motion

Both a and c

Force 12 N and 5 N are add, the resultant con not be

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13 N

6 N

7 N

17 N

Electro magnetic waves emitted from radio antenna are.

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Stationary

Longitudinal

Transvers

Both a and b

The following gas was identified in the sun using spectroscopy

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Hydrogen

Helium

Carbon

Nitrogen

A.C. can be converted into D.C. by

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An oscillator

Detector

An amplifier

Rectifier

In the equation if f₂ > then

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Michael Faraday and Joseph Henry belongs to

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England and USA

France and USA

China and USA

None of these

The existence of positron was discovered in:

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1929

1928

1931

1933

Gauss's law can only be applied to.

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A curved surface

A flat surface

A closed surface

A surface of any shape

The most common source of an A.C. Voltage is.

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Motor

Cell

Generator

Thermo couple

The binding energy per nucleon is maximum for

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Helium

Iron

Potassium

Radium

The half life of radioactive elements depends upon

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Temperature

Nature of element

Amount of the radioactive substance

Pressure

Automatic function of street light can be done by the use of.

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Inductor

Rectifier

Comparator

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