Question # 1

A Carnot engine has the same efficiency between (i) 100 K and 500 K and ii) T and 900 K What will be T.

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90 K

100 K

180 K

200 K

Who was awarded Nobel Prize for fist artificial atomic transmutation.

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Yukawa

Rutherford

Chadwick

Becquerel

Birds planes and boats are streamlined to reduce

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Turbulence

Thrust

Drag

Lift

Which of the following propagates at the same speed as velocity of light.

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Heat waves

Sound waves

Shock waves

Beta particles

The horizontal distance of a projectile from the point of launch to the point of impacts is called.

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Height of projectile

Range of projectile

Path of projectile

Angle of projectile

Image formed by a camera is

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Real, inverted, and diminished

Virtual, upright and diminished

Virtual, upright and magnified

Real, inverted and magnified

If the specific latent heat of vaporization of oxygen is 214 kJ kg-1 how much heat will be absorbed when 3.0 kg of oxygen is boiled off at its boiling point.

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14 kJ

64 k J

140 kJ

642 k j

Who discovered a phenomenon of thermos electricity.

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Peltier

Joule

Seeback

thomson

The unit of energy are the same as that of

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Force

Power

Work

Efficiency

If the number of coulombs per second through a wire of 10 Ohm resistance across a 120 V line is 12, the current is

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5 A

10 A

12 A

15 A

The Compton effect in X-rays proves that

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Electrons have wave property

x-rays have wave properly

X-rays have particle characteristics

Electrons cannot exist

What is the number of degree of freedom of an oscillating simple gravity pendulum

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1

2

3

4

Geiger counter was designed by

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Wilson

Geiger and Muller

Lawrence

Mosely

One particle having zero mass and zero charge is.

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Positron

Electron

Neutrino

Neutron

On which parameter the path difference between two interfering waves depends upon.

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Amplitude

Pitch

Intensity

Phase angle

An object moves 5.0 m north and then 3.0 m south . Find both the distance travelled and the magnitude of the displacement vector.

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2.0 m, 8.0 m

8.0 m, 2.0 m

8.0 m, 8.0 m

2.0 m, 2.0 m

Infrared radiation is also known as

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Radio signals

Heat radiation

Magnetic resonance waves

RADAR

Which of the following pair is correct.

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Rutherford - x-rays

Roentgen - Electron

Chadwick - Neutron

J.J. Thomson -Photon

Lenses of what diameter are usually not practical.

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Less than 1 m

Larger than 1m

Larger than 5 m

Larger than 10 m

When two point charges of equal magnitude and opposite sign exist very close to one another the arrangement is called.

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An electric dipole

An amperian current

A null charge

A neutral source

x-rays can cause fluorescence in materials such as

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Cadmium

Zinc sulphide

Palatinocyanide

All of these

The charge on an Isolated conductor always lies.

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Within the conductor

At the centre of the conductor

On the surface of the conductor

Outside the surface of the conductor

Which of the following is the cause of failure of a lens to form a sharp and district image of a white object.

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Spherical aberration

Chromatic aberration

Distortion

Astigmatism

In case of longitudinal waves the individual particles of the medium move.

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In circles

In ellipses

Parallel to wave propagation

Perpendicular to wave propagation

The angle subtended at the centre of a circle by an arc equal to its radius is equal to.

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One rotation

One radian

One degree

One revolution

Which of the following radiations will burn human skin

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Infrared

Ultraviolet

X rays

Alpha particles

Good acoustic implies

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Obtaining as much reverberations as possible

Making the reverberation as small as possible

Obtaining the optimum of reverberations

Eliminating reverberations

Optics is the

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Scientific study of light and vision

Scientific study to sound

Scientific study of time

Scientific study of fluid

The terminal velocity in case of spherical droplet is directly proportional to.

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Square of the radius of the droplet

Radius of the droplet

Cube of the radius of the droplet

Half of the Radius of the droplet half

On average there is no energy transfer in.

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Sound waves

Water waves

Standing waves

Mechanical waves

The Inner electrons in heavy atoms can be disturbed and dislodged by.

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X rays

Alpha particle

Beta particles

gama particles

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