Question # 1

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

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parabola

straight line

hyper bola

ellipse

When certain nucleus emits anα particle, its mass number:

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Increases by one

Decreases by one

Remain same

Decreases by four

None of these

A particle having mass and charge equal to that of an electron is called:

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Proton

Positron

Pion

Pi-meson

Both (C) and (D)

The intensity at a point due to a charge is inversely proportional to

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Amount of charge

Size of the charge

Distance between charge and the point

Square of the distance from the charge

None of these

The induced current is a conductor depends upon:

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Resistance of the loop

Speed with which the conductor moves

Any of these

Both (A) and (B)

None of these

When the object lies between F and 2F, the image formed by is formed at:

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Real

Virtual

Diminished

Erect

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:

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60°

90°

30°

0°

There are some whose resistivity becomes zero below a certain temperature, called

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absolute zero

0°C

critical temperature

lower fixed point

The natural frequency of a pendulum which is vibrating freely, depends upon its

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mass

length

material

all of them

A grating with high resolving power can distinguish _______ difference in wavelengths :

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Smaller

Larger

Zero

None of these

Amount of heat required to raise the temperature of a body through 1 K is called its

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Specific heat

Water equivalent

Thermal capacity

Entropy

A microscope has an objective lens of 10 mm focal length and an eye piece of 25.0 mm focal length what is the distance between the lenses

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≈ 200 mm

≈ 210 mm

≈ 213 mm

≈ 233 mm

The more viscous liquids is

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Coal tar

Honey

Kerosene oil

Water

Motion of a paratrooper is an example of

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motion

rest

static equilibrium

dynamic equilibrium

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

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light

sound

any one of them

none of them

Plane polarized light can be produced by:

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Simple reflection

Refraction

Selective absorption

All of these

The direction of torque is

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Along F

Along r

Perpendicular plant formed by F and r

None of these

The organic substances which shows optical rotation when they are in solution

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Tartaric acid

Sugar

Alcohol

a and b

Einstein inferred that is gravitational acceleration and inertial acceleration are equivalent, gravity must

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Reflect light

Bend light

Turn light

None of these

One micron is equivalent to

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10^-4m

10^-6m

10⁴m

10⁶m

The electrical conductivities of insulators are ranging from

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10^-5to 10^-10(Ω m)^-1

10^-10to 10^-15(Ω m)^-1

10^-5to 10^-15(Ω m)^-1

10^-10to 10^-20(Ω m)^-1

Which of the following is not crystalline solid

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Zinc

Copper

Sodium chloride

None of these

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