Question # 1

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

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a rocket

an aeroplane

a projectile

a ballon

Diameter of the nucleus s of the order of

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10^-10m

10^-12m

10^-15m

10^-18m

The charge carries in the electrolyte are:

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Positive ions

Negative ions

Either (A) or (B)

Both (A) and (B)

Neither (A) nor (B)

Which one of the following is dimensionless:

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Acceleration

Velocity

Density

Angle

Angle between the ray of light and the corresponding wavefront is:

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0°

60°

90°

120°

Arsenic, antimony and phosphorus are the elements from

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third group

fourth group

fifth group

none of them

Work-energy principle states that work done on the body by applied force is equal to change in:

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Potential energy

Kinetic nergy

Linear momentum

None of these

If two forces of magnitudes 3.5 and 2.5 N act on a body such that the angle between the forces is zero, then magnitude of the resultant will be:

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1.0 N

6 N

3.5 N

12 N

Huygen principle is used to determine:

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Speed of light

Location of wavefront

About polarized or unpolarized light

None of them

The value of relative permittivity of different dielectrics are:

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Equal

Different

Greater than one

Smaller than one

Both (B) and (C)

Which of the following is not an example of adiabatic process

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the rapid escape of air from a burst type

the rapid expansion and compression of air through which a sound wave is passing

cloud formation in the atmosphere

none of them

A ball is thrown with a speed of 30 ms^-1_{in a direction of 30}° with the ground. What will be its time of flight?

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3.1 s

1.55 s

0.31 s

15.5 s

When the terminal velocity is reached the acceleration of a body moving through a viscous medium is

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Zero

Positive

Negative

Depends upon other factor

The renewable energy source is

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Natural gas

Biomass

Tide3s

None of these

Pascal is a unit of

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Mass

Power

Pressure

Intensity of light

The speed of flow of fluid in laminar flow is

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Low

High

Very high

Some time high some time low

When the both conditions are satisfied, then there is no

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Linear acceleration

Angular acceleration

Linear acceleration and angular acceleration

None of these

1 cal = __________

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11.184Joule

2.184Joule

3.184Joule

4.184Joule

2π radian is equal to the degrees

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180^o

90^o

360^o

None of these

A thin film is a transparent medium whose thickness with the wavelength of light are

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Not comparable

Comparable

Both

None of these

Newton's laws are empirical laws, deduced from

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Theories

Experiments

Facts

None of these

In superconductors, the resistance of a material drops to zero and no

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Power is dissipated

Energy is dissipated

Current is dissipated

None of these

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