Question # 1

If a body retains completely its altered shape and size, it is said to be

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Perfecto elasticity

Perfect plasticity

Elasticity

elastic limit

The ratio of tensile stress to tensile strain is called.

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Shear modulus

Bulk modolus

Young's modulus

Elastic limit

In a magnifying glass, the objective is placed at a distance

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Less than the focal

Between the focal length and twice the focal length

Greater than twice the focal length

At the focus of the lens

Which of the following is not a ferromagnetic materials.

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Iron

steel

Copper

Cobalt

An object travels at constant speed around a circle of radius 1.0 m in 1.0 s the magnitude of its acceleration is.

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zero

1.0 m s-2

2 m s-2

4 pi2 m s-2

Diffusion of gases occurs because the molecules of the

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Gas present in a higher concentration exerts a high pressure

Gases are different

Gasses attract each other

Gasses over about randomly

The magnitude of the instantaneous velocity is called the.

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_Displacement

Speed

Acceleration

Length

Who was the most outstanding theoretical physicist.

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Daniel

Maxwell

Ampere

Young

If the current in a wire which is placed perpendicular to a magnetic fields increases the force on the wire.

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Increases

Decreases

Remain the same

Will be zero

The particles equal in mass or greater than protons are called.

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Mesons

Bosons

Baryons

Nucleons

When an electron and a positron are annihilated, then number of protons produced is.

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1

2

3

4

Which one of the following describes a measure of opposition to alternating current.

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Electrical impedance

Capacitance

Inductance

Admittance

The phenomenon in which a photon of frequency 'f' is scattered by an electron and the scattered photon has frequency f <f is known as.

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Pair production

Pair annihilations

Photoelectric effect

Compton's effect

Why is an oxide coated filament used in vacuum tube.

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It has a longer lime

Irt can with stand high

It emit electrons at low temperature

It reduces the effect of space charge

The distribution of electrical charge i an object caused by teh influence of nearby charges is called.

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Electric potential

Electrostatic induction

Electric flux

Electric dipole moment

A bi prism consists of.

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Two parallel glass plates

Two acute angled prisms

Two obtuse angled prisms

Two right angled prisms

Which one of the following telescopes has the least length when set for parallel rays.

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Astronomical telescope

Galileo's telescope

Terrestrial telescope

Reflecting telescope

The magnetic flux density at the centre of a long solenoid is dependent on.

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The number of turns per unit length of the silenced

The volume of the solenoid

The diameter of each turn of the solenoid

All of above

The unit of Rydberg constant R is

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m

m3

m^-1

m-2

A magnetic field is said to exist at a point if

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A force is exerted on a charge placed at that point

A magnetic pole exists at that point

An ampersand current loop surrounds the point

A force not felt by a static charge acts on a moving charge placed at that point

Which of the following is nearly monochromatic light.

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Light from fluorescent tube

Light from neon lamp

Light from sodium lamp

Light from simple lamp

If the output voltage is not smooth but pulsating then it can be made smooth by using a circuit known as.

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Filter

Gate

shunt

Fuse

The pulsating outflow of blood from the heart by alternate systole and diastole is smoothed out by

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The blocking action of the heart's valves

The viscosity of the blood

The effect of gravity

the elasticity of the blood vessels

In a simple D.C. motor the direction of current in the motor is reversed every half revolution to keep the motor turning in the same direction which part of the motor does this.

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Brushes

Coil

Commutator

Poles

Newton's rings are formed due to

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Diffraction of light

Interference of light

Polarization of light

Reflection of light

Newton's rings are experimentally derived from the phenomenon of.

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Polarization of light

Resolution of light

Interference of light

Diffraction of light

Which of the following is its own anti particle.

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Photon

Electron

Proton

positron

When of the following colours scatters minimum.

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Blue

Violet

Yellow

Red

If the dot product of two non zero vectors vanishes the vectors will be.

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any scalar quantity

Any negative number

Its magnitude but not direction

Its magnitude and direction

The basic quantity used to describe the state of magnetization of a substance is the

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Magnetic strength

Magnetic susceptibility

Magnetic moment

Magnetic moment per unit volume

Inertial mass and gravitational mass are

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Opposite

Proportional

Weights

Inversely proportional

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