Question # 1

Least count of digital vernier callipers is.

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0.01 cm

0.01 mm

0.1 mm

0.1 cm

SI unit of pressure is pascal, which is equal to:

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10⁴ Nm^-2

1 Nm^-2

10²Nm^-2

10³ Nm^-2

Value of 'g' on surface of moon is:

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1.62 ms^-2

3.7 ms^-2

9.2 ms^-2

10 ms^-2

The direction of momentum is

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opposite to motion

Along the velocity

Perpendicular to motion

None of these

The insulator of heat is:

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Cork

Cotton

Wood

All

Normal human body temperature is:

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15 ^oC

37^oC

37^oF

98,6 ^oC

If mass of a body becomes half that its energy K.E will be reduce to:

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Zero

Half

Double

4 Times

If the velocity of moving body in circle is doubled, then its centripetal force is

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Double

Half

Four times

Remain

Larger is the area greater will be:

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Radiation

Transfer of heat

Evaporation

Conduction of heat

In summers the railways bends due to:

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Expansion

Contraction

Both

None

Latent heat of vaporization is denoted by:

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H1

Hm

Hv

Hf

Specific resistance of copper is ____________ x 10^-8Ohm-meter

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1.62

1.69

5.25

2.75

Unlike charges always:

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Repel each other

Attract each other

Sometimes repel and attract each other

Both A and B

The value or current I passing through a conductor is inversely proportional to:

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Temperature

Potential difference

e.m.f.

resistance

The digits used in electronics are:

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1

0

0 and 1

1 and 2

To see stomach problems we use:

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Gastroscope

Bronchoscope

Cystoscope

All of these

Micro waves are used in:

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Radio

Television

Mobile phone

All of these

The maximum displacement from mean position is called:

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Maximum height

Time period

Amplitude

Interval

Which component is output device of computer:

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CPU

C.D

Keyboard

Monitor

The coil of a transformer which is connected to A.C is called:

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Primary coil

Secondary coil

Field coil

Armature coil

The point through which rays of light pass after reflection from concave mirror is called principal:

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Focus

Circle

Axis

Radius

The energy is transferred from one place of another:

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through matter

through waves

both a and b

through vacuum

the acceleration of a body having SHM, depends upon its.

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Time period

Amplitude

Frequency

Displacement from mean position

The location of near point changes with

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Age

Size of the eye

Sharpness of the eye

None of these

The light signal in Opticla fiber must be regenerated by advice called.

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Regenerator

Generator

Repeater

Diode

If velocity time graph is parallel to time axis, then acceleration of moving body will be.

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Maximum

Positive

Zero

Negative

In simple harmonic motion the velocity of a particle is maximum at.

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Extreme position

Mean position

In between extreme and mean position

None of them

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

Critical angle is that angle of incident ofr which angle of refraction is.

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90 ^o

45 ^o

42 ^o

24 ^o

the louder the sound, the greater will be its.

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Speed

Frequency

Amplitude

Wave length

The number of spark plug needed in diesel engine is

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0

2

3

4

The shortest distance between two points is called

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Distance

Amplitude

Displacement

Is a number

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

Anti particle of electron is

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Proton

Photon

Neutron

Positron

Energy density in an inductor is.

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Directly proportional to magnetic field

Directly proportional to square of magnetic field

Inversely proportional to magnetic field

Inversely proportional to square of magnetic field

The circuit in which current and voltage are in phase, the power factor is:

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Zero

1

-1

2

The function of three anodes a C.R.O is

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To accelerate electrons only

To focus the electrons only

To control the brightness of spot on screen

To accelerate and focus the electrons

In frequency modulation, the amplitude of carrier waves is

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Increases

Remains constant

Decreases

None of these

The magnetic field inside solenoid is given:

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μ_∘nI²

μ_∘nI

μ_∘n/1²

μ_∘I/n

Disintegration of photon on striking a nucleus into an electron and positron is known as.

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Annihilation of matter

Compton effect

Pair production

Photo electric effect

A pair of quark and anti quark makes a.

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Meason

harden

Lapton

Baryon

Which series lies in the ultraviolet region.

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Balmer series

Bracket series

Ptund series

Lyman series

Transistor was discovered by

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Young

Curie

John Bardeen

Shale's

In RLC circuit the energy is dissipated in

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R only

R and L

R and C

L and C