Question # 1

A force of 200 N is making an angle of 30°. What is horizontal component?

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173.2 N

100 N

600 N

None of these

The specific heat of glass is:

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501.72

500

501

502

Glass and transparent polythene sheets allow radiations of wavelength to pass through them:

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Long

Medium

Short

All

Newton discovered the cause of falling apple in :

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1886

1905

1665

1600

The number of perpendicular components of a force are

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1

2

3

4

The centre of gravity of irregular shaped body can be found with the help of:

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Wedge

Meter rod

Plumb line

Screw gauge

In circular motion, the motion of every particle of body is.

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Direction

Opposite

Same

None of these

According to law of conservation of energy increases K.E is equal to:

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Increase P.E

Decrease P.E

Decrease K.E

None of these

Kinetic energy is possessed by a body by:

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Virtue of motion

Height

Rest

Nil

The centripetal acceleration is always along.

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Normal force

Centripetal forces

Mass

Horizental forces

Which of following units is equal to Kgm² s^-2

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Newton

Joule

Watt

Coloumb

The disturbance travelling in a medium is called:

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Wave motion

Simple harmonic motion

Motion

both a ,b

Unlike charges always:

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Repel each other

Attract each other

Sometimes repel and attract each other

Both A and B

What is the power rating of a lamp connected to a 12 v source when it carries 2.5 A?

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4.8 W

14.5 W

30 W

60 W

The time required to complete one round trip (vibration) abut mena position is called:

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Time period

Freqency

Amplitude

None of these

How many possible solutions are there for a prblem?

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One

Two

Three

Multiple

The property of substance, which opposes the flow of current through it is called:

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Resistance

Reactance

Resistivity

None

Big unit of capacitance is:

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Farad

Volt

Watt

Coulomb

the number of waves passing through a point in one second is called:

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time period

cycle

frequency

amplitude

Which we double the voltage in a simple electric circuit. We double the

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Current

Power

Resistance

both a and b

The base of computer operation are:

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1,2

0, 1

0, 2

1, 10

Which memory consists of integrated circuits?

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Primary memory

Audio cassette

Video cassette

Compact cassette

The relation between the speed and hoop can be written as

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2

4

1/2

1/4

Distance covered by a freely falling body is 2 seconds will be

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9.8 m

19.6 m

44.4 m

49 m

The optical fiber is covered for protection by a

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Glass Jacket

Plastic Jacket

Copper Jacket

Aluminum Jacket

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

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Hemoglobin

Stars

Galaxies

Stones

The unit of work in base unit is

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Kg m-1 sec-2

Kgm sec-2

Kgm2 sec-1

Kgm-1 sec-1

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

The temperature of human body on Kelvin scale is

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210K

310K

410K

510K

When a fore of 100 N is acting on an object along x-axis then its vertical component will be.

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50 N

0 N

25 N

10 N

The first person who attempted to measure the speed of light was.

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Michelson

Hygen's

Galileo

Ability

The actual efficiency of property turned petrol engine is.

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20% to 30%

30% to 35%

40% to 45%

25% to 30%

Force acting on the piston to move outward is.

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Compressive stoke

Power stoke

All stoke

Exhaust stoke

A dot represents the direction of magnetic field.

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Out of page

Into the page

Tangent to page

Parallels to page

Commutator was invented in

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1834

1820

1840

1835

1 Henry =

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VSA^-1

VS^-1A^-1

V^-1SA

VSA^-2

Weber is the unit of

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Magnetic flux

Permeability

magnetic force

None of above

A real transformer does not change.

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Voltage level

Current level

Power level

Frequency

Before and after nuclear reaction the number of protons and neutrons:

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Must be different

Must be decreased

Must be increased

Remains same

Electromagnetic induction obeys law of conservation

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Charge

Energy

Momentum

Mass

When a very high energy modeules such as y radiation interact with matter, the phenomenon arising will be.

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Photoelectric effect

Compton effect

Pair production

Annihilation of matter

A material which is insulator at 0 K and conduct at room temperature is.

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Silver

Lead

Germanium

Polythene

At high frequency the value of reactance of capacitor will be.

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Small

Zero

Large

Infinite

The field is strong and uniform.

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Inside the solenoid

Surrounding of solenoid externally

Perpendicular to solenoid

All of above