Question # 1

When a body is vibrating its displacement from mean position

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Remains constant

Changes with time

Become(-)ve

None of these

Parallel vectors of same magnitude will be

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Equal

Opposite

Both a and b

None of these

The study of fluid dynamics is

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Easy

Complicated

Impossible

None of these

The velocity of a projectile is maximum

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At the highest point

At point of launching and just before striking the ground

At half of the height

After striking the ground

If an object is placed with in the focal length of a convex lens, its image is formed.

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Real

Inverted

Virtual

Smaller than object

Mercury is used as a thermometric substance because

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It is opaque

Does not stick to glass

Has low specific heat

All of these

The frequency of waves produced in microwave oven is

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1435 Hz

2450 MHz

1860 MHz

2850 Hz

A man of mass 5 kg is falling freely, the fore acting on it will be

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5 N

9.8 N

19.6 N

49 N

Law of physics expressed in term of

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Base quantites

Derived quantities

a and b

None of these

A man of 5000 kg moves with an acceralation of 1 ms-2 force acting on it is.

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5 N

500 N

50 N

5000 N

The process of confining the beam of light to vibrate in one plane is called.

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Interference

Diffraction

Polarization

Total internal refraction

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

The final image seen through ey piece in telescope is.

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Real, enlarge and inverted

Vertual, enlarge and erect

Virtual, enlarge and inverted

In Real, enlarge and erect

The unit of solar light inversely is

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Watt

kW m-2

Watt m-2

1 m2

The produce oscillation, body is pulled away from its

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Mean position

Extreme position

Both a and b

None of these

For working of heat engine, there must be.

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A source

A sink

either of these

Both of these

The area between velocity time graph and the time axis is numerically equal to.

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?Speed of object

Distance covered by the object

Average velocity of the object

Acceleration of the object.

Vectors have

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Numerical value

Directional

Both a and b

None of these

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