Question # 1

Swimming is based on the principle of

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Newton's 1st law

Newton's 2nd law

Newton's 3rd law

All

The second law gives the relationship between

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mass and velocity

force and acceleration

velocity and acceleration

mass and weight

Field lines are closer to each other in the region where the filed is

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Stronger

Weaker

Much weaker

Absent

None of these

If we increase the distance between two plates of the capacitor, the capacitance will

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Increase

Decrease

Remain same

First increase then decrease

Distance traveled by a body falling from rest in the first, second and third second is in the ration of

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1 : 2 : 3

1 : 3 : 5

1 : 4 : 9

None of the above

The image of the tip of a needle is never sharp because of

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Polarization of light

Interference of light

Diffraction of light

Reflection of light

When certain area A is held parallel to the field lines, then:

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No lines cross this area

Maximum lines pass through this area

The number of lines are between zero and maximum

Both (A) and (B) correct

None of these

Work done by the force of friction is always

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Positive

Zero

Negative

Maximum

What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10^-2Wb, and change in current is 0.01 A?

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2 H

3 H

1/2 H

Zero

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

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The faster one

Depends on their mass

The slower one

Both will reach simultaneously

In the region surrounding a current carrying wire:

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A magnetic field is setup

The lines of force are elliptical

Direction of lines of forces depends upon direction of current

Both (A) and (C)

All of these

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

Color printing uses just ______ colors

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Seven

five

three

four

The petrol engine works on the basis of

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Kelvin statement

Clausius statement

Carnot cycle

First law of thermodynamics

Upon applying some unbalanced external stress the deformation may be observed in

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Length

Surface area

Volume

All of these

If 'd' is the total displacement of the body in time 't' then the velocity during this interval t is

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Initial velocity

Variable velocity

Average velocity

None of these

In an adiabatic process

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Temperature remains constant

No change of internal energy

Volume remains constant

No heat enters or leaves the system

The maximum drag force on a falling sphere is 9.8 N, its weight is

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1 N

9.8 N

4.9 N

None of these

Commercial polarizing material is

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Colour glass

Infra red glass

Polaroid glass

None of these

The angular speed of a flywheel making 120 revolutions/minute is:

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π rad/s

2π rad/s

4π rad/s

6π rad/s

The right hand rule is applied to find

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The direction of a vector obtained by the vector product of two vectors

The magnitude of the vector obtained in the above manner

Neither the direction nor the magnitude

None of these

The principle of rocket motion is based on the

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First law of motion

Second law of motion

Third law of motion

None of these

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