Question # 1

What happens to the intensity or the brightness of the lamps connected in series as more and more lamps are added.

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Increases

Decreases

Remains the same

Cannot be predicted

The three law of motion first published in 1687 by Sir Issac Newton in his work.

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Method of Fluxions

Optics

Principal Mathematica

Arithmetic Universalism

The law of inertia was first time formulated by

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Galileo

Newton

Kepler

Planck

Thermocouple is used for

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Converting atomic energy into heat energy

Measure the radiant energy

Storing the heat energy

Measuring current

When a body is lifted through a height 'h' the work done on the body appears in the form of.

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K.E

P.E

Heat

Density

What is the basic advantage of class A operation of an amplifier.

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It has high efficiency

It has high gain

It has low distortion

It has high distortion

If velocity is doubled then

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Momentum increase 4 time and K.E. increase 2 times

Momentum increases 2 times and K.E. remains constant

Momentum increases 2 times and K.E. increases 4 times

Both momentum and K.E. remain constant

The time period of a simple pendulum is independent of its.

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Length

Mass

Acceleration due to gravity

Restoring force

Which given quantity remains the same in isotones.

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Mass number

Atomic number

Number of neutrons

Number of protons

Faraday's law was deduced in

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1826

1831

1836

1841

If a force of 10 N makes an angle of 30 ^o with x-axis its component is given by

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1.866 N

8.66 N

0.89 N

0.866 N

Max. Planck was awarded Nobel prize in.

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1916

1918

1921

1923

_{When a charged particle moves through a magnetic field it suffers a change in its}

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Charge

Mass

Energy

Direction of motion

Which of the following pair is correct.

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Rutherford - x-rays

Roentgen - Electron

Chadwick - Neutron

J.J. Thomson -Photon

In the gas equation PV =nRT , V is the volume of.

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1 g of gas

1 L of gas

1 mol of gas

1 kg of gas

The maximum height reached by a projectile with a velocity of 14 m s-1 at an angle of 30 ^owith the horizontal is.

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1.5 m

2.5 m

1 m

2 m

Which of the following is renewable source of energy.

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Oil

Natural gas

Uranium

Sunlight

The 1st condition of equilibriums satisfied if.

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Linear acceleration is zero

Angular acceleration is zero

The vector sum of all the forces is zero

The vector sum of all the torque is increase

The specific heat capacity of a substance is the amount of heat required to.

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Raise its temperature by 1 K

Raise the temperature of 1 kg of the substance by 1 K

Melt 1 kg of the substance

Boil 1 kg of the substance

When objects placed in a room are exposed to X- rays they appear

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Violet

Visible

Red

Invisible

How solid hydrogen is obtained.

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By cascade process

By joule kelvin effect

By adiabatic expansion

Lowering temperature below melting point

Plane polarized light can be produced by

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Reflection

Refraction

Scattering of light

All of these

Two wires P and Q each of same length and the same material are connected in parallel to a battery The diameter of P is half that of Q What fraction of the total current passes through P.

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0.02

0.25

0.33

0.50

the ratio of applied stress to volumetric strain is called.

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shear modulus

Bulk modulus

Young's modulus

elastic limit

Dioptre is the term used for describing the

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Intensity of light

Density of air

Power of light

Refractive index

Which of the following is formed by decay of a free neurton.

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A number of electrons

Two protons

A proton and an electron

An alpha particle

Mass -energy relation means that the product of mass times the square of the speed of light must be equal to.

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Torque

Momentum

Energy

Impulse

The branch of medicine which deals with the anatomy physiology and diseases of the eye

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Ophthalmology

Radiology

Cardiology

Andrology

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

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1

2

3

4

The radius of second orbit of hydrogen atom is

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0.071 A

0.142 A

4.752 A

9.5298 A

The penetrating power of X rays is least with materials of.

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High mass density

High volume density

High electron density

High weight

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