Question # 1

On the ground the gravitational force on a satellite is W What is the gravitational force on the satellite when at height R/50

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0.96 W

0.98 W

1.04 W

1.02 W

The presence of a magnetic field can be detected by a

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Small mass

Stationary positive charge

Stationary negative charge

Magnetic compass

If the period of a wave motion is 2 s and the wave speed is 4 cm s-1 then its frequency is

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1/8 C s-1

1/2 C s-1

2 C s-1

8 C s-1

Which is the light sensitive tissue in human eye

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Retina

pupil

Iris

Cornea

The energy in electron volts necessary to remove the most loosely bound electron from the neutral atom is known as.

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Faraday energy

Wave number

Ionization Potential

Excitation potential

A ball mass 0.25 kg is thrown to a height of 20 m The change in G.P.E is

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49 J

50 J

-75 J

500 J

The image of an object 5 mm high is only 1 cm high. The magnification of the lens is

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0.2

0.5

1

2

Which magnetic properties is inherent in all materials.

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Para magnetism

diamagnetism

Ferromagnetism

demagnetism

Radioactivity is the phenomenon associated with the.

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Transition of radiowaves

production of alpha particles only

Decay of nucleus

Reception of radio waves

Which of the following form of electromagnetic energy has the highest frequency.

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X rays

Game rays

Ultraviolet waves

Infrared waves

What happens to internal energy of a piece of lead when hammered.

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Increases

Decreases

Remains unchanged

Becomes zero

The band of colours is called.

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Spectrum

Prism

Medley

LASER

A 4 kJ mass of copper of specific heat capacity of 400 J kg-1k-1 is heated for 160 s by a heater of power 200 W what is the rise in temperature.

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10 K

16 K

100 K

160 K

Heat Carnot be transferred from a colder to a hotter region unless work is done This is the statement of.

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Firs law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

Zeroth law of thermodynamcis

What type of process is the Carnot's cycle.

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Reversible

Irreversible

Neither reversible nor irreversible

May be reversible or irreversible

The working principal of a photograph enlarger is basically the same as that of a.

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Camera

Side projection

Microsopce

Telecopse

A pendulum vibrates with a time period of 1 s which range of sound is produced by it

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Audible

Infrasonic

Ultrasonci

Super sonic

The nib of fountain pan is split of convey ink down the nib by the phenomenon of.

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Adhesion

Cohesion

Osmosis

Capillary

If emf of the battery in a thermocouple is doubled, what is the rate of heat generation at one function.

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Remains unchanged

Becomes half

Become double

Becomes 4 times

One volt is equal to.

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One joule per coulomb

One dyne per coulomb

One newton per coulomb

One watt second

The scalar product of two vectors in negative when

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Vectors are parallel

Vectors are antiparallel

Vectors and perpendicular

Vectors are parallel with same magnitude

Which one is the primary standard for temperature measurement.

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Resistance thermometer

Mercury in glass thermometer

Constant volume gas thermometer

Pyrometer

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 free electron theory explains conduction in

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Insulators only

Metals only

Semi conductor only

Non metals only

Radioactive substances do not emit

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Alpha particles

Beta particles

Gama rays

Neutrons

Thermodynamics concern its primary with the

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Measurement of quantity of heat

Physical effects of temperature changes

Conversion of heat into other energy forms

Behavior of gases

On which temperature scale a degree is 1/180 of the interval between the freezing point and the boiling point.

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Celsius scale

Fahrenheit scales

Rankine scale

Kelvin scale

For which of the following objects is the centre of mass equidistant from every point on its surface

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An unsharpened pencil

A gramophone record

An egg

A table tennis ball

Which liquid can flow easily.

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Traacle

Pitch

Ether

All flow with same rate

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 energy that must be added to separate the nucleus is called.

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Critical energy

Binding energy

Gravitational energy

Electrostatic energy

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