Question # 1

In transverse waves, the individual particles of the medium move:

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In circles

Perpendicular to the direction of level

Parallel to the direction of level

None of these

If d is the displacement of the body in time t, then its average velocity will be

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V_av= d x t

V_{av = t/d}

V_{av = d/t}

Which quantity has different dimension?

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Tension

Work

Energy

Torque

The flux through a closed surface depends upon:

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Shape of geometry of the closed surface

Charge enclosed

Nature of the medium

Both (A) and (B)

Both (B) and (C)

Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is

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zero

small

large

very large

The electric lines of force are

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Imaginary

Physically existing everywhere

Physically existing near the charge

All of the above

Matter is made up of very tiny particles called

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Atoms

Molecules

Ions

None of these

Blood has a density

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Equal to water

Greater then water

Lesser then water

None of these

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

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constant rate

volume rate

flow rate

steady rate

The dimensions of work

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[MLT^-1]

[MLT^-2]

[ML²T^-2]

[MLT]

No spark plug is needed in

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petrol engine

diesel engine

both of them

none of them

A compound microscopes consists of objective of

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Very short focal length

Large focal length

Very large focal length

None of these

Two equal, antiparallel and non-collinear forces are called

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Net force

Couple

Torque

None of these

Maximum height of a bullet when fired at 30° with horizontal is 11 m.Then height when it is fired at 60° is

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22 m

6 m

33 m

7.8 m

A positive charge is moved from a low potential point (A) to a high potential point (B) Then the electric potential energy

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Increases

Decreases

Will remain the same

Nothing definite can be predicted

Young's modulus for mercury is

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0

2

5

6

In a container having water filled up to a height h,a hole is made in the bottom.The velocity of water flowing out of the hole is

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Independent of h

Proportional to h^1/2

Proportional to h

Proportional h²

Satellites are objects that orbit around the

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Sun

Planet

Earth

None of these

In the doping process, the ratio of the doping atoms to the semi-conductor atom is

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1 to 10

1 to 10³

1 to 10⁶

1 to 10⁹

The energy of photon of energy 1 eV is:

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1240 nm

1040 nm

1000 nm

620 nm

A person standing on a rotating platform has his hands lowered.He suddenly outstretches his arms.The angular momentum

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Becomes zero

Increases

Decreases

Remains the same

The fibre core has constant refractive index such as

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1.48

1.5

1.52

1.56

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