Question # 1

Avo-meter is used of measure the

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current, voltage

voltage, resistance

resistance, current

current, voltage and resistance

The magnitude of resultant of three vectors is 3. Its x-component is one, y-component is two, then its z-component is:

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0

1

2

3

If force and displacement are in opposite direction, the work done is taken as

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Positive work

Negative work

Zero work

Infinite work

Physics is one of the branches of:

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Social sciences

Physical sciences

Biological sciences

Abstract art

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

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Ideal gas

Inert gas

Real gas

None of these

A magnetic force on an electron travelling with 10⁸ms^-1parallel to a field of strength 1 Wb m^-2is

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Zero

10⁵m

10^-10N

10⁸N

Rutherford performed an experiment on nuclear reactions in:

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1718 A.D

1818 A.D

1918 A.D

2001 A.D.

1701 A.D.

Majority charge carriers in the p-region of p-n junction are:

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electrons

positrons

Holes

Neutrons

None of these

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

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Greater than the speed at which they pass from left to right

Less than the speed at which they pass from left to right

The same speed at which they pass from left to right

Any of above

None of them

In the formula B= µ̻ nl, the symbol n denotes:

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Total number of turns of solenoid

Number of turns per unit length

Number of turns per unit volume

Numbers of turns per unit area

Number of moles

A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done:

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Minimum Work

Maximum Work

Zero Work

Negative Work

If force of friction is negligible, then acceleration of two free falling objects of different masses is

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The same

Different

Smaller mass has smaller acceleration

None of these

The transmitter in optical fiber system contains a device called

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LED

Diode

Transistor

None of these

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

1 joule is equal to electrons volt

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1.6 x 10^-19

1.6 x 10¹⁹

6.25 x 10¹⁹

6.25 x 10¹⁸

The vector sum of two forces is perpendicular to their vector differences.In that case the forces

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Are equal to each other in magnitude

Are not equal to each other in magnitude

Cannot be predicted

Are equal to each other

If the focal length of objective is 10 mm find its magnification

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18

19

20

21

In case of constructive interference of two waves, the amplitude of the resultant wave is_____either of the waves:

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Greater than

Equal to

Smaller than

None of these

The capacity of two way telephone circuits of INTESAT VI satellite is circuits

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10, 000

20,000

30,000

40,000

In YDS experiment, data given isλ= 500 nm, L = 100 cm,Δy comes out to be

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0.5 cm

0.5 mm

0.5 nm

0.5 m

The maximum kinetic energy of emitted photoelectrons depends upon:

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The intensity of incident light

Frequency of the incident light

Temperature of the surface

All of above

In a photocell, sodium and potassium emit electrons for:

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Visible light

Infrared light

Ultraviolet light

All of these

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