Question # 1

The branch of physics which deals with the structure and properties of solids is called:

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Plasma physics

Solid state physics

Any of above

Astrophysics

Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?

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potential energy

pressure energy

strain energy

(a) and (b) only

For multiplication and division purposes, percentage uncertainties are:

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Add

subtracted

Multiplied

Divided

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

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Is smaller than

Is greater than

Becomes equal to

None of these

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be

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180 watt

10 watt

20 watt

60 watt

The second law gives the relationship between

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mass and velocity

force and acceleration

velocity and acceleration

mass and weight

The system international (SI) is built from _______ kind of unites

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Two

Three

Four

Five

The instantaneous acceleration of a body moving with constant speed in a circle:

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Remains constant

Is called centripetal acceleration

Tangential acceleration

None of these

A mass spectrograph sort out

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molecules

atoms

elements

isotopes

High energy physics is branch of physics, which deals with:

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Stars and galaxies

Sub-atomic particles

Light and sound

Molecules

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

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P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

A long solenoid has 20 turns/ cm. The current necessary to produce a magnetic field of 20 mellites inside the solenoid is approximately:

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1A

2A

4A

8A

A particle is moving with a constant speed along a straight line path A force is not required to

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Increase its speed

Decrease its momentum

Change its direction

Keep it moving with the same speed

When m₂>> m₁and V_{2 = 0 then result of their velocities}

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V₂= 0 and V₁= V'₁

V'₁= -V₁and V'₂= 0

V₁= V₁and V₂= 0

None of these

Measurement of a standard metre in terms of the wavelength of red cadmium light is

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1,563,163.5

1,553,363.5

155,553.5

1,553,163.5

For incident angles equal or greater than the critical angle the glass air boundary will act as a

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Convex mirror

Concave mirror

Mirror

None if them

Total mass when silver coins are added to box as 2.2 kg, 0.01001 Kg and 0.01002 Kg correct to appropriate precision

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2.3 Kg

2.2 Kg

2.43 Kg

2.67 Kg

According to Young s experiment the distance between two adjacent bright fringes of blue light is _____ than for oranges light

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Less

Maximum

Equal

May be less may be greater depending upon slit spacing

By convention, the torques are taken as negative if they are in the

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downward direction

leftward direction

clockwise direction

anticlockwise direction

The systolic blood pressure comes when

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Vessel collapse

Cutting off the blood flow

None of these

All of these

One a clear day at noon, the intensity of the solar energy reaching the Earth surface is about

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1 KWm^-1

2 KWm^-2

3 KWm^-2

None of these

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3 x 10⁵J

2 x 10⁵J

10⁵J

Zero

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