Question # 1

The concept of field theory was put forward by

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Franklin

Kepler

Oersted

Michael Faraday

Equal charges are given to two spheres of different radii. The potential will

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Be more on the smaller sphere

Be more on the bigger sphere

Be equal on both the sphere

Depend on the nature of the material of the sphere

A device used to measure the speed of liquid flow is known as

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barometer

speedometer

sphygmomanometer

venture-meter

The percentage of available heat energy converted into work by a diesel engine is roughly

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35 %`

40 %

35 - 40 %

25 %

Depletion region contains:

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Protons

Positive ions

Negative ions

Both (B) and (C)

Both (A) and (C)

A toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:

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38 m/sec

3.8 m/sec

0.6 m/sec

None of these

Blood pressure is measured in torr. Which of the following units could belong to torr?

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N m^-1

N m^-2

N m

N^-1m^-2

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

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6 ohm

4 ohm

zero ohm

1.33 ohm

Fluids resist force, This property is called

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Stiffness

Strength

Ductility

Elasticity

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

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Heating effect of current

Chemical effect of current

Magnetic effect of current

Electromagnetic effect of current

The pressure will be low where the speed of the fluid is

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Zero

High

Low

Constant

What is true between centre of gravity and center of mass?

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They are always at the same point

Centre of gravity changes as one goes away from the earth but centre of mass remains same

Centre of mass changes but centre of gravity is always same

None of these

An inertial frame of reference is that frame of reference in which

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a = 0

a > 0

a < 0

all of them

Which of the following gives volts as its unit

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Current/resistance

Power x current

Rate of flow of charge

emf of a cell

The angle between A and B is θ.The value of the triple product A,(B x A) is:

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A²B

Zero

A²B sin θ

A²B Cos θ

If a lens is cut into two piece perpendicular to the principal axis and only part is used the intensity of the image:

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Remains same

1/2 times

2 times

Infinite

The viscosity of glycrine is

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0.019x10^-9 Nsm^-2

0.801x10^-6 Nsm^-2

6.29x10^-3 N-sm^-2

6.29x10³ Nsm^-2

The horizontal range of projectile, at a certain place, depends upon

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the mass of the projectile

velocity of projection

angle of projection

angel as well as velocity of projection

A longitudinal sinusoidal wave has wavelength of 1cm and a period of 2sec. Its wavevelocity is:

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50 cm/ sec

0.5 cm/ sec

5 m/ s

0.005 m/ sec

A gas at 250K is contained ion a closed vessel. If its temperature increases by 1K, the percentage increase in its pressure is

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0.4%

0.6%

0.8%

1.0%

Inspite of different dispersion, all the wavelengths arrive at the other end of the fibre at the same time. With a step-index fibre overall time difference may be about

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40 ns

30 ns

32 ns

33 ns

Physics is an important and basic part of physical sciences which is a

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Mathematical science

Experimental science

Statistical science

None of these

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