Question # 1

Electrons are

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positive charged

negatively charged

massless

neutral

Blood has a density

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Equal to water

Greater then water

Lesser then water

None of these

A resistance used in voltmeter is called

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shunt resistance

high resistance

low resistance

zero resistance

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m²The force on the wire is

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5N

4N

1.5N

6N

Lyman series in the spectrum of hydrogen exists in the :

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Infra-red region

Visible region

Ultraviolet region

Both(A) and (B)

None of these

Root out the conventional source of energy:

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Energy from blomass

hydroelectric energy

Geothermal energy

None of these

Consider a spherical shell of metal at he centre of which a positive point charge is kept

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The electric filed is zero outside the shell

The electric field is zero everywhere

The electric field is zero in the region inside the shell

The electric field is non-zero in both regions outside and inside the shell

The value of the potential difference across the depletion region for the case of germanium is

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0.3 V

0.5 V

0.7 V

0.9 V

Converse of pair production is known as

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Compton effect

annihilation of matter

photoelectric effect

none of these

The inkjet printer ejects a thin stream of:

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Water

Oil

Ink

Any of above

None of these

Max Planck received the Nobel Prize for his discovery of energy quants in:

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1718 AD

1918 AH

1818 AD

1918 AD

None of these

In the Newton's ring, as we proceed towards the periphery of the lens, the thickness of air film

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gradually decreases

gradually increases

suddenly becomes zero

all of them

Radian is an angle which is

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Solid angle

Plane angle

Angle

None of these

The modulus of rigidity of a liquid is:

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Zero

1

Infinite

None of these

A _____ lens is used in the apparatus to get newton's ring:

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Plano-concave

Plano-convex

Convexo concave

Double covex

The maintaining the elastic limits of any body, the relation stress to strains is called

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Hooke's law

Pascal's law

Young's law

None of them

One kilowatt hour is equal

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3.5 × 10⁵ J

3.6 × 10⁸ J

3.6 × 10⁶ J

3.5 × 10⁶ J

Energy can be obtained form solid waste by

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Direct combustion

Indirect combustion

Permentation

None of these

A diffraction grating of length 2cm has 4000 lines The grating element is

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0.5 x 10^-2 cm

5 x 10⁴

5 x 10^-4

0.5 x 10^-4 cm

When a body moves in a circle the angle between linear velocity and angular velocity is

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180°

90°

45°

0°

Computer chips are made from

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Conductors

Semiconductors

Insulators

Both A and B

The most common method to obtain plane polarized light by using dichoric substance is:

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Selective absorption

Reflection from different surfaces

Refraction from different surfaces

Scattering

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