Question # 1

Mathematical manipulation of the two quantized states can be best carried if they are represented by

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high - low

yes - no

on - off

0 - 1

Viscosity of water is ______ that of air but ___ that of plasma.

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More, more

Less, more

Less, less

More, less

When a vector is multiplied by a negative number, its direction:

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Remains the same

Changes

Changes by 180°

None of these

The maximum distance of body from mean position when body is executing SHM is called

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Time period

Displacement

Amplitude

Frequency

The useful unit of the angular displacement in SI unit is:

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Degree

Revolution

Radian

Metre

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

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-2 mv

Zero

2 mv

mv

According to slok's law, drag force depends on

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Radius of the spherical body

Terminal velocity of body

Coefficient of viscosity

All of above

How much time, theα-particle more massive than an electron

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600

7000

5000

15000

The work performed on an object does not depend on:

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Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

If F=0.04 N and X=4 cm then K=

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1 Nm^-1

2 Nm^-1

3 Nm^-1

4 Nm^-1

At constant temperature, if the density of the gas is increased, its pressure will:

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One kg of a substance

Unit volume of a substance

One mole of a substance

None of these

If the mass of the bullet is m fiber from a rifle of mass M with a velocity v. The recoiling of rifle is V', then the momentum of rifle is

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The relative permitivity ∈_r for distilled water is

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2.9

1.0008

2.0

2.1

When the same object is viewed at a shorter distance the image on the retina of eye is ______ and so the object appears ______

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Greater, small

Smaller, smaller

Smaller, larger

Greater, larger

A body moving in circular motion with constant speed has

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Constant velocity

Constant acceleration

Constant kinetic energy

Constant displacement

1 torr = --------------------

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1.20 Nm^-2

1.38 Nm^-2

1.33 Nm^-2

1.31 Nm^-2

If the wavelength of light used in Michelsion's interferometer is 400 nm and the moveable mirror only moved throughλ/4, then the length moved will be

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10 nm

10^-2mm

1 nm

10^-4mm

The displacement-time graph of a particle is as shown below.It indicates that

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The particle starts with a certain velocity,but the motion is retarded and finally the particle stops

The velocity of the particle is constant throughout

The acceleration of the particle is constant throughout

The particle starts with a velocity the motion is accelerated and finally the particle moves with a constant velocity

You are traveling in a car during a thunder storm. In order to protect yourself from lightning you would prefer to

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Remain in car

Take shelter under tree

Get on and lie flat on the ground

Touch the nearest electric pole

A diffraction grating has 500 liens per mm. its slit spacing or grating element will

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500 mm

5 x 10^-3mm

2 x 10^-5mm

2 x 10^-3mm

The moment of linear momentum of a body is called

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Angular momentum

Couple

Impulse

Torque

Color printing uses just ______ colors

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Seven

five

three

four

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