Question # 1

The SI unit of strain is

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N

Dynes

Pascal

Dimensionless

Distance covered during one vibration of an oscillating body in terms of amplitude A is:

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A

2 A

3 A

4 A

A relationship between Gauses of magnetic induction and Tesla(T) is given by

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G 10^-3T

G = 10^-2T

G = 10^-4T

G = 10^-1T

Conventionally the angular velocity is directed at an angle of

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

Two vectors to be combined have magnitudes of 60 N and 35 N. Pick the possible answer:

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100 N

70 N

20 N

Zero

The total reactance of a series RLC circuit at resonance is

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zero

Equal to the resistance

Infinity

Capacitive

The path followed by the projectile is known as:

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Cycle

Hyperbola

Trajectory

Route

An induced current can be produced by:

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Constant magnetic field

Changing magnetic field

Varying magnetic field

Constant electric field

None of these

Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons

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Frequency

Penetrating power

Energy

Method of creation

A body moving along the circumference of a circle of radius R completes one revolution. The radius of the covered path to the angle subtended at the center is:

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Radius of the circle

Twice the radius

Thrice the radius

None of these

If an amount of heat enters the system it could

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decrease the internal energy

not change the internal energy

increase the internal energy

none of them

A precise measurement is the one which has

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Absolute uncertainty

Less absolute uncertainty

More absolute uncertainty

None of these

When a meteorite enters into earth atmosphere its energy converts into

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Kinetic energy

Heat energy

Mechanical energy

None of these

For destructive interference the path difference is give by:

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(m-1/2)λ

(m+1/2)λ

mλ

1/2 mλ

At 0 K a piece of Ge and Si is a perfect

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Conductor

Insulator

Semiconductor

None of these

Sunlight is also partially polarized because of Earth's atmosphere due to scattering by

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Water vapours

Air particles

Dust particles

All of these

If an iron ball and a wooden ball of the same radius was released from a height h in vacuum,then time taken by both of them to reach ground will be

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Unequal

Exactly equal

Roughly equal

Zero

The frequency of the fundamental mode of open at one organ pipe is 400 Hz. Ifone end of pipe is closed the fundamental frequency will be

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800 Hz

600 Hz

400 Hz

200 Hz

If the vibrations of the light wave are confined to one plane only, then this light is called

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unpolarized ligth

polarized light

sunlight

none of them

A component of a vector has its

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Normal value

Effective value

Given direction

b and c

For the same value of resistors the output of non-inverting amplifier compared to the output of inverting amplifier is, (ignoring phase difference)

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Greater

Equal

Smaller

Undefined

Monochromatic light means waves of:

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Same frequency

Same colour

Same wavelength

All of them

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