Question # 1

The term radius of gyration relates to.

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Moment of force

Moment of inertia

Law of gravitation

simple harmonic motion

If 'p' is the momentum of an object of mass 'm' the expression p2/m has base units identical to.

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Power

Force

Velocity

Energy

An immersion heater rated at 150 W is fitted into a large block of ice at 0 oC. The specific latent heat of fusionism 300 J g-1. How long does it take to melt 10 g of ice.

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5 s

10 s

15 s

20 s

Radioactive substances do not emit

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Alpha particles

Beta particles

Gama rays

Neutrons

Who explained the Fraunhofer lines in the spectrum of solar radiations.

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Wein

Stefan

Fraunhofer

Kirchoff

A car is travelling on a level highway at at speed of 15 m s-1. A braking force of 3,000 N brings the car to stop in 10 s The mass of the car is.

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1500 kg

2,000 kg

2,500 kg

3,000 kg

An example of simple harmonic motion is

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Fast moving cricket ball

Motion of bicycle

Motion of a bee

Motion of simple pendulum

How solid hydrogen is obtained.

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By cascade process

By joule kelvin effect

By adiabatic expansion

Lowering temperature below melting point

The half life of a radioactive substance depend on.

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Pressure

Temperature

Amount of substance

No external influences

The current passing through the coil of a galvanometer is directly proportional to

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Resistance

voltage

Angle of deflection

conductance

In heavy atims the electrons are assumed to be arranged in.

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Elliptical shells

Inner shells

Concentric shells

Outer shells

A tank 3 m long 1 m wide and 0.5 m deep is filled with oil which weight 12,000 N . The pressure on the base of the tank due to oil is.

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1,000 Pa

4,000 Pa

3,000 Pa

6,000 Pa

The normal Human body temperature in Fahrenheit scale is.

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32 ^oF

40 ^oF

98.4^oF

212 ^oF

Angular momentum of a body under a central force is

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Zero

Maximum

Minimum

Constant

A well known example of an intrinsic semi conductors is.

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Germanium

Phosphorus

Cobalt

Aluminium

Two simple pendulums of the same length but having different masses

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Have different frequencies

Will have period proportional to their masses

Will have periods independent of their length

Have the same period

A resistance is a device which

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Acids the flow of current is a circuit

Converts electrical energy to heat

Is a type of charge pump

Is like a switch

A pair of point charges with equal magnitude and opposite sign separated by a distance 'r' produce.

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Electric dipole

Electric charge

Electric field

electric arc

The value of open loop gain for the amplifier is

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zero

very low

very high

of an intermediate vaue

The Fahrenheit and Kelvin scales intersect at

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40

-40

140

-140

An alternating current can be produced by

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Turbine

Electric motor

Generator

Trnasormer

A particle performs SHM of amplitude 0.020 and frequency 2.5 Hz. What is its maximum speed.

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0.050 m s-1

0.125 m s-1

0.314 m s-1

0.75 m s-1

Which experiment confirmed the de Broglie hypothesis.

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Double slit experiment

Division germier experiment

Schrodinger's Cat experment

Bohr's experiment

Light travels perpendicular to electric and magnetic fields and requires no material medium, was proposed by.

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Einstein

Max planck

Maxwell

Bragg

Who described an ideal heat engine in 1840

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Boyle

Saadi Carnot

Kelvin

Currie

A galvanometer can be converted into voltmeter by connecting in series with the galvanometer a

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Low resistance

High resistance

Resistance of intermediate range

Shunt

Induced current in a circuit depends upon

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The speed with which the conductor moves in the magnetic field

Resistance of the loop

Direction of the loop

Shape of the loop

A battery drives 50 C of charge round a circuit. The total work done is 750 J What is the electromotive force of the battery.

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0.07 V

15 V

700 V

1500 V

A pencil dipped partially into water appears bent because of.

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Reflection of water surface

Diffraction of water surface

Refraction of water surface

Water is a fluid

The resistance of a capacitor when it is connected with a battery is.

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Zero

Finite

Infinite

The same

The practical efficiency of a heat engine is

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25% to 30.5 %

35% to 45%

30% to 45%

15% to 25%

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