Question # 1

In the nineteenth century, physics science were divided into distine discipline.

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5

4

6

7

A body is in neutral equilibrium when its centre of gravity:

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Is at its highest position

Is at the lowest position

Keep its height if displaced

Is situated at its bottom

Dull black surface are good ____________

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Absorber

Radiator

Conductor

None of these

The weight of body on earth with mass 8 kg is:

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10 N

100 N

80 N

8 N

The velocity of geostationary satellites with respect to the Earth is:

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Maximum

Zero

Minimum

100 ms^-1

The value of latent heat of fusion ice is:

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3.36 x 10^-5 Jkg^-1

3.36 x 10⁵Jkg^-1

3.36 x 10⁶Jkg^-1

None of these

Work done is maximum when angle between force and displacement is:

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45°

0°

60°

90°

The process in which heat is transfer due to actual movement of molecule is called.

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Conduction

radiation

Convection

All of these

The average speed of cheetah is.

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60 kmh^-1

70 kmh^-1

75 kmh^-1

80 kmh^-1

Kgms^-2 is equal to:

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Joule

Mole

Newton

Watt

At sea level, the atmospheric pressure is about.

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101320 Pa

101300 Pa

10110 Pa

10112 Pa

When a ray of light enters from denser medium to rare medium, the angle of incidence for which angle of refraction is 90° is called:

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Angle of incidence

Critical angle

Angle of refraction

Angle of deviation

Wave transfer

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Energy

Frequency

Wavelength

Velocity

Specific resistance of aluminium in (10^-8 Ω.m) is:

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1.7

2.75

5.25

1.69

Which of the following tasks are performed by most of the algorithms?

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Input

Out put

Processing

All of these

Which frequency is used by elephants to communicate with each other:

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Zero frequency

Low frequency

Medium frequency

High frequency

The distance between two consecutive compressions or rarefactions in longitudinal waves is called:

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Amplitude

Wavelength

Half wavelength

1/4 wavelength

Sound waves having frequency higher than 20,000 Hz are called:

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Ultrasonic

Infrasonic

Audible

Echo

In computer terminology information means.

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any data

raw data

processed data

large data

Which wire has lowest resistance?

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Thick wire

Thin wire

Very thin wire

All

The unit of intensity of sound:

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wm^-1

wm

wm^-2

wm^-3

When a body moves to and fro about a point its motion is called:

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Random motion

Linear motion

Vibratory motion

Rotatory motion

Crests and trough are formed in.

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Longitudinal waves

transverse waves

Stationary waves

Compression waves

A finite volume of gas consists of

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Small no. of molecules

Large no. of molecule

Average no. of molecule

None of these

the distance covered during one vibration of an oscillating body in terms of amplitude 'A' is

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A/2

A

2A

4A

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

Stationary waves are generated on a string of high l, if tension is increased , frequency of vibration will

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Decrease

Unchanged

Half

Increases

Opted unit to measure blood pressure is.

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N/m2

Pascal

mm of Hg

N.m2

A man weight 1000 N in a stationary lift. If the lift moves up with an acceleration of 10 ms-2. then its weight becomes.

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1000 N

2000 N

3000 N

0 N

10 N and 20 N are acting on a body of mass 2 kg the minimum acceleration will be.

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10 ms-2

20 ms-2

60 ms-2

5 ms-2

The dimensions of work are.

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[MLT-1]

[MLT-2]

[ML2T-2]

[MLT]

The subtraction of a vector is equivalent to the addition with

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Same direction

Perpendicular direction

Reversed direction

All of these

Biomas is a potential source of

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Renewable energy

Non renewable energy

Botha a and b

Tidal energy

If force in the direction of velocity of conductor, then induced current is directed,

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Anti clockwise

Clock wise

At equilibrium

None of above

The rod of unit length is moving at 30 o through a magnetic field of 1 T. If the velocity of rod is 1 m/s, then induced emf in the rod will be given by

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I V

0.25 V

0.5 V

0.6 V

Magnetic flux density at a point due to current carrying coil is determined by

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Ampere's law

Faraday's law

Lenz's law

Gauss's law

Potentiometer is used to.

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Compare emf of two cells

Detect internal resistance of cell

Measure P.D.

All of these

Rectification is the process of converting.

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D.C. into A.C.

A.C. in to D.C.

Low signal to high

High signal to low

The energy of photon for photoelectric effect is less than

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1 MeV

2 MeV

5 MeV

8 MeV

The effective way to increase the sensitivity of moving coil galvanometer is.

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Increase the area of coil

Increase the number of turn

Increase the magnetic field

Increase the value of constant C

The most abundant isotope of neon is:

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Neon 21

Neon 20

Neon 22

None of above

The building blocks of protons and neutrons are called.

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Ions

Electrons

Positrons

quarks

In Wilson cloud chamber, ß-particles leave

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Thin and continuous tracks

Thick and continuous tracks

No tracks

Thin and discontinuous tracks

Output of D.C. motor is

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A.C. energy

Mechanical energy

Chemical energy

D.C. energy