Question # 1

Minimum number of unequal forces whose vector sum can be zero are.

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5

4

3

2

The orbital angular momentum is associated with the motion of a body along

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Straight path

Circular path

Curved path

Along any path

When water falls from tap, its cross sectional area decrease due to.

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Decrease of speed

Increase of speed

Air pressure

Gravity increase

Energy dissipated usually appears as

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P.E.

Heat Energy

Chemical energy

Nuclear Energy

The product of time period and frequency is.

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Zero

1

2

3

The dimensions of work are.

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[MLT-1]

[MLT-2]

[ML2T-2]

[MLT]

A vector is denoted by

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Light face

Bold face

Both a and b

None of these

The blue colour of sky is due to

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diffraction

Reflection

Polarization

Scattering

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 diameter of a lens is called

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Focal length

Aperture

Principle axis

Centre

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

Head to tail rule is used for

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Addition of vectors

Subtraction of vectors

Multiplication of vectors

Division of vectors

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

The frequency of waves produced in microwave oven is

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1435 Hz

2450 MHz

1860 MHz

2850 Hz

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

Carnot cycle consists of.

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Two steps

Three steps

Four steps

Five steps

A convex lens acts as diverging lens if the object is placed at

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F

2F

Between F and 2 F

Within the F

Total confined light is obtained by

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Total internal reflection

Refraction of light

Diffraction

Polarization

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