Question # 1

In the force applied to parallel to the direction of motion, then the work done is:

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Positive

Negative

Zero

None of these

The decrease in velocity per unit time is called:

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Variable Acceleration

Average Acceleration

Retardation

None of these

A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:

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The coil is distorted

The coil is rotated

The coil is neither distorted nor rotated

Both A and B

None of these

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

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maximum

zero

half of the maximum value

one third of the maximum value

A ball is dropped from a certain height and another ball is projected horizontally from the same point. Which of the following statement is correct?

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Both hit the ground at the same veloctiy

Both hit the ground at the same speed

The change of velocity during the path for both balls is the same

The change of speed during the path for both balls is the same

If a 40 watt light bulb burns for 2 hours. how much heat is generated

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288 x 10³J

288 x 10⁸J

288 x 10⁵J

288 x 10⁶J

Origin of the electric and the gravitational forces

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Was known in 1911 A.D.

Was known in 1811 A.D.

Was known in 1711 A.D.

is still unknown

Was known in 1611 A.D.

An A.C. voltmeter read 250 volts. The frequency of alternating is 50 Hz, the peak value of voltage is

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3525.0 volts

35.35 volts

353.5 volts

3.535 volts

The shell closer to the nucleus is called:

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N shell

L shell

K shell

M shell

O shell

The density of water is 10³kg/m³. The water pressure on a submarine is 2.0 x 10⁷N/m². The depth of the submarine below the surface of the water, in maters, is approximately

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200 m

11000 m

2000 m

8000 m

An alpha particle has a charge of

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+2e

-2e

-e

+3e

cream gets separated out of milk when it is churned it is due to

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Gravitational force

Centripetal force

Centrifugal force

Resistance

An inertial frame of reference in which acceleration is

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Very high

Very very low

Zero

None of these

Measurement of a standard metre in terms of the wavelength of red cadmium light is

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1,563,163.5

1,553,363.5

155,553.5

1,553,163.5

The property of light which does not change with the nature of the medium is:

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Frequency

Amplitude

Wavelength

None of these

In nuclear fission reaction, when the products are 140X and 94Sr, the number of neutrons emitted is

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1

2

5

9

The artillery shells travels along parabolic paths under the influence of

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magnetic field

electric field

electromagnetic field

gravitational field

Mercury thermometer can be used to measure temperature up to

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260°C

100°C

360°C

450°C

The rater of flow is measure in

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Liter-sec

Liter/sec

Liter/sec²

Sec/liter

The effect is to increase the inflating the bag is

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To compress the blood vessels

To increase external pressure

To cut off the flow of blood

All of these

The relation for impulse can be written as

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F × t = mv_i - mv_f

F × t = mV

F × t = mV_f - mV_i

None of these

Point out angle/angle at which the sin θ and tan θ have the same value

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2^o and 8^o

4^o and 6^o

2^o and 4^o

8^o and 10^o

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