Question # 1

A voltmeter is a

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High resistance galvanometer

Low resistance galvanometer

Zero resistance galvanometer

Infinite resistance galvanometer

The Pressure will be low where the speed of the fluid is

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Zero

High

Low

Constant

Static electricity occurs when

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two metals are connected to a battery

Different insulators are rubbed together

The weather is very humid

Different conductors are rubbed together

use of outer layer in optical fires called cladding is mainly to.

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Scatter thelight

Absorb unwanted light

Transmit the light

Produce total internal reflection

The potential due to which an electron is lifted from gerund state to excited state is.

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Potential gradient

excitation potential

Ionization potential

Potential difference

In alternating current circuits the quantity which plays the same role as resistance in direct current circuits is called.

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Reactance

Admittance

Conductance

Impedance

The centre of gravity of a body is

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The centre of the body

The point at the mass of the body acts

The point at which the whole weight of the body acts

The point of rotation

The cloud chamber was invented by C.T.R. Wilson in

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1905

1907

1909

1911

A wire surrounded by a concentric cylindrical metal shield constitutes a.

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Spherical capacitor

Parallel plate capacitor

Cylindrical capacitor

Cylindrical condenser

Efficiency of a Carnot engine depends on

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Temperature

Pressure

Volume

The nature of working substance

The half life of isotopes X is four days and its initial mass is 32 mg What mass of the isotope X will remain after twelve days.

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2 mg

4 mg

8 mg

18 mg

Sub atomic paticles whihc does not experience strong nuclear force are.

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hadrons

Photons

Leptons

Nucleons

If an elevator is moving vertically up with an acceleration 'a' the force exerted on the floor by a passing of mass 'm' is

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Ma

Mg

M(g +a)

M (g-a)

The resistance of a coil changes directly with

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The current of A.C.

The frequency of A.C

The inductance

Both B and C

The emission of electrons from a metal surface when exposed to light of suitable frequency is called.

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Pair production

Compton effect

Photo electric effect

Zeeman effect

The escape velocity

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Is independent of mas of the body

Increases with the increases of mass of the body

Decreases with the decreases of mass of the body

Depends upon the type of body used

What is used in an electric circuit to allow current in one direction only.

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A fuse

An ammeter

A diode

A relay

Which of the following factor will not affect the speed of sound i a medium.

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Temperature

Pressure

Humidity

Mass

In order to measure the true emf of an electrolytic cell it is necessary that.

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The measurement be made while charging the cell

No current be drawn from the cell

The cell be connected into a type circuit

The cell be connected into a parallel type circuit

The product of two non zero numbers is.

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A vector quantity

A unit vector

Always zero

Never equal to zero

Phenomenon of radioactivity is due to disintegration of.

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Proton

Neutron

electron

nucleus

A water wave is an example of.

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Transverse wave

Longitudinal wave

Hair wave

Shock wave

The blooming of the image due to dispersion in lenses is called.

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spherical aberration

Chromatic aberration

Astigmation

Curvature of image field

A large ripple tank with a vibrator working at a frequency of 30 Hz produce 25 complete waves in a distance of 50 cm. The velocity of the wave is.

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9.53 cm s-1

60 cm s-1

750 cm s-1

1500 cm s-1

A body of mass 2 kg attached to a spring is pulled to a distance of 4 cm What will be the value of spring constant K.

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490 N m-1

980 N m-1

1260 N m-1

1960- N m-1

Which onw of the following is deflected by an electric field.

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Alpha particles

Gama rays

Neutrons

x rays

The induced current in a circuit can be increased by

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Using a strong magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All of the above

If temperature of the sink is decreased the efficiency of a Carnot engine

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Increases

Decreases

Remains constant

First increases and thend ecreases

The dimensions of work are

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[MLT-2]

[ML2T-2]

[ML2T-1]

[MLT-1]

Waves transfer

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Frequency

Velocity

Energy

Wavelength

Which instrument measures the magnification of a telescope.

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lactometer

dynamometer

Wattmeter

Ammeter

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