Question # 1

What is zoom lens

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It is a lens having fixed focal length

It is a lens having variable focal length

It is a lens used in radii to telescope

All of the above

The ability of eye to focus near as well as distant object is termed as.

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Myopia

Persistence of vision

Power of accommodation

Astigmatism

The dimensions of torque are.

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[MLT-2]

[ML-1T-1]

[ML2T-2]

[ML-2]

Pitch of the sound determines

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Its shrillness

Loudness of sund

Intensity level

Quality of sound

When of the following colours scatters minimum.

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Blue

Violet

Yellow

Red

The proportion of crystalline to amorphous regions in a polymer depends on its

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Chemical composition

Molecular arrangement

Physical state

Chemical composition and molecular arrangement

Transistor stands for

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Transfer of resistance

Transfer of current

Transfer of power

Transfer of voltage

A magnetic field is said to exist at a point if

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A force is exerted on a charge placed at that point

A magnetic pole exists at that point

An ampersand current loop surrounds the point

A force not felt by a static charge acts on a moving charge placed at that point

The advantage of electron tube over a transistor is.

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Its high efficiency

Its high gain

Low consumption of power

Low input impedance

When mas of a string is increased 4 times its original valve, the velocity of the wave.

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Becomes double

Reduces to one half

Reduces to one fourth

Increases 4 times to its original value

Which of the following has greatest binding energy per nucleon.

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Normal hydrogen

Deuterium

Tritium

Helium-4

Who discovered the exclusion principle which states that no two electrons can occupy the same quantum mechanical state in a given system.

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Neils Bohr

Issac Newton

Wolfgang Pauli

Max Planck

The volume of a goas at constant pressure is directly proportional to the temperature as measured on the.

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Celsius scale

Kelvin scale

Fahrenheit scale

Baume scale

The diameter of a lens is called.

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Focal length

Principal axis

Optical centre

Aperture

Which is the light sensitive tissue in human eye

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Retina

pupil

Iris

Cornea

Which of the following is not an elastic collision

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A man jumps on a cart

A bullet embedded in a block

Colliding of two glass balls

Colliding of two tennis balls

Molecules of a liquid

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Do not vibrate about their mean position

Are rigidly held with each other

Have weak attractive forces

Have strong attractive forces

The centre of gravity of an object is also called.

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Centre of buoyancy

Centre of mass

Centre of the body

Torque

Difference in the density of two medium when waves are passing from one into another medium always results in the change in.

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Wave speed

Wave direction

Both speed and direction

Wave frquency

The wave nature of light was proposed by

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Thomas Young

Fresnel

Maxwell

Huygen

A charged capacitor has charge on its

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Outside surface

Inner surface

Surroundings

Mid point

In the case of forced oscillations frequency of oscillation is.

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The natural damped frequency

The natural undamped frequency

The frequency of the external periodic force

Some other frequency

In the experiment of force on a current carrying conductor in a uniform magnetic field the magnitude of force depends upon which factor.

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Force is inversely proportional to current

Force is directly proportional to current

Force is inversely proportional to voltage

Force is directly proportional to voltage

X-rays spectrum may be

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Continuous spectrum

Discontinuous spectrum

Line spectrum

Continuous and line spectrum

What would be the magnitude and direction of acceleration which would made the spring balance reading zero.

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Zero

1 m s-2 upward

9.8 m s-2 upward

9.8 m s-2 downward

The ionization energy for hydrogen atom is

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-11.6 eV

-12.6 eV

-13.6 eV

-19.6 eV

Dioptre is the term used for describing the

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Intensity of light

Density of air

Power of light

Refractive index

The wavelength of Lyman series for hydrogen spectrum lies in the.

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Visible region

Ultraviolet region

Infrared region

Far infrared region

The mass that appears in Newton's second law is known as.

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Rest mass

Gravitational mass

Inertial mass

Weight

The gravitational field strength at a point p on the earth's surfae is numerically equal to.

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The acceleration of free fail at p

The change in P.E. per unit distance at P

The work done in bringing unit mass from infinity to P

Which two terminal passive electronic component implements electrical resistance as a circuit element.

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Capacitor

Inductor

Resistor

Transformer

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