Question # 1

The maximum velocity necessary to put a satellite into orbit is

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7.1 kms-1

7.3 kms-1

7.9 kms-1

8,9 kms-1

The components of a vector which are perpendicular to each other are called

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Horizontal components

Vertical components

Rectangular components

All of these

Teh speed of sound in air is 340 m/s. If the pressure of air is doubled then the speed becomes.

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Double

Half

Four times

Remains same

The path followed by a projectile in known as its

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Range

Trajectory

Cycle

Height

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.

The work done is isochoric process is.

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Constant

Variable

Zero

Depend upon condition

Transformation of heat other forms of energy is discussed in

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Thermal physics

Thermodynamics

Atomic physics

Nuclear physics

Damping is the process in which energy

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Increases

Remains constant

Dissipates

None of these

Energy dissipated usually appears as

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P.E.

Heat Energy

Chemical energy

Nuclear Energy

When a body is vibrating its displacement from mean position

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Remains constant

Changes with time

Become(-)ve

None of these

The location of near point changes with

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Age

Size of the eye

Sharpness of the eye

None of these

Centripetal force perform

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Maximum work

Minimum work

Negative work

No work

1 torr in Nm-2 is expressed as.

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130.5 Nm-2

133.3 N m-2

140.2 Nm-2

135.2 Nm-2

The SI unit of flow rate are

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m-sec^-2

m³-sec^-1

m³-sec^-2

m-sec^-3

A convex lens can be used as

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Simple microscope

Compound microscope

Telescope

Spectrometer

Increase in the velocity of sound in air for 1 ^oC rise in temperature is.

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61 ms-1

0.61 ms-1

161 ms-1

261 ms-1

Which of the following is evidence of wave nature of light

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Interference

Diffraction

Polarization

All of these

Which is unimportant in describing the satellites orbit.

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Distance of satellite from earth's center

Gravitational constant G

Mass of satellite

Mass of earth

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