Question # 1

Which of the follow material has large specific heat?

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Copper

Ice

Water

Mercury

The centripetal acceleration is always along.

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Normal force

Centripetal forces

Mass

Horizental forces

Mass-Energy equation was given by:

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Newton

Einstein

Joule

Pascal

To make a body more stable ________ should be lowered:

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Axis of rotation

Center of gravity

Stabilty

None

What kind of waste is produced by nuclear power plant?

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Carbon di oxide

Radio active

Fuels

Toxic material

The quantities that are completely decribed by only magnitude are.

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vector

Scalar

Base

Derived

Above of mass 50 kg is raised to a height of 3m. what is its P.E

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500 J

1000 J

1500 J

2000 J

Thermoflask is used maintain:

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Heat

Temperature

Density

Pressure

If Fy = 4 N and Fx = 3 N , what is the magnitude of resolution of force.

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5 N

7 N

10 N

15N

hp stands for :

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1w

Horse power

Joule

All are true

Feathers of bird give good thermal:

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Conduction

Insulation

Convection

None of these

The sensation of sound persists in our brain for:

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0.1 sec

0.01 sec

1 sec

10 sec

by connecting suitable high resistance in series with galvanometer it will convert into:

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voltmeter

galvanometer

ammeter

multimeter

Which type of capacitor is cylindrical in shape:

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Paper capacitor

Mica capacitor

Variable capacitor

Plates capacitor

1 nano farad is equal to:

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1 x 10^-12 F

1 x 10⁹F

1 x 10^-9F

1 x 10^-6F

From which of the following you can get information almost about everything?

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Book

Teacher

Computer

Internet

If a wave moves in a slinky spring with frequency of 4Hz and wave length of 0.4m, the speed of the wave will be:

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1.0 ms-1

1.2 ms-1

1.4 ms-1

1.6 ms-1

The index of refraction depends on:

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The focal length

The speed of light

The image distance

The object distance

Shock absorbers in automobiles are one practical application of:

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SHM

Random motion

Damped motion

None of these

The true ratio of a transformer is 10. It means:

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Vs = 10Vp

Ns = Np/10

Ns = 10NP

VS= Vp/10

The step-up transformer

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Increases the input current

Increase the input voltage

Has more turns in the primary

Has less turns in hte secondary coil

A capacitor stores 0.24 coulombs at 10 volts. It capacitance is:

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0.024F

0.12F

0.6F

0.8F

Sodium chloride in a flame gives

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Green light

White light

Red light

Yellow light

The distance between two consecutive crests of troughs is called

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Time period

Wave length

Frequency

Displacement

Speed of sound in vacuum is

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280 ms-1

332 ms-1

333 ms-1

Zero ms-1

P.E. of a spring is stored in

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Spring

mass

Both of them

None of these

A swing is good example of

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Resonance

Vibration

Time period

Oscillation

X-ray diffraction has been very useful in determining the structure of

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Hemoglobin

Stars

Galaxies

Stones

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

A ray of light shows the direction of propagation of light It is line which is.

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Normal to the wave front

Parallax to the wave front

Opposite to the wave front

Equal to the wave front

The power needed to lift a mass of 5000 g to height of 1 m in 2 secnd is

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2.45 watt

24.5 watt

245 watt

2.45 watt

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

When the rocket moves away from the earth, the work against gravity

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Remains constant

Varies directly with distance

Varies inversely with distance

Varies inversely with square of distance

In a transistor, collector current is controlled by:

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Collector voltage

Base current

Collector resistance

All of the above

The radius of hydrogen atom is:

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0.53A°

0.053A°

0.53 x 10^-9

0.053 x10^-9

The device which is used as amplifier and works with the negative feedback is.

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Operational amplifier

P-n-p transistor

n-p-n transistor

Transistor

Eintein's Photoelectric equation is E_k= hf -∅ in this equation E₁, refers to:

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K.E of al the emited electrons

Mean K.E of emited electrons

Maximum K.E of emited electrons

Minimum K.E of emited electrons

Current passing through the coil of galvanometer

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CO/BAN

CoN /BA

NAB/CO

AN/BCO

The electromagnetic spectrum contains

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Radio waves

X-rays

Microwaves

All of these

Which material should be inserted between the plates of a capacitor in order to increase its capacitance.

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Copper

Mica

Iron

Tin

Which component of the transistor has greater contrition of impurity.

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Base

Emitter

Collector

Emitter and collector

The solids are classified as

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Polymeric

Amorphous

Crystalline

All of above

The Balmer series is obtained when all the transition of electrons terminate on

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1^st orbit

2nd orbit

3rd orbit

4th orbit

The number of electrons emitted depends upon

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Colour of target surface

Shape of surface

Frequency of incident light

Intensity of incident light