Question # 1

Supplementary units radian and steradian were established for

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Density

Viscosity

electric intensity

Geometrical quantities

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

Who originated the idea of heat death of the universe is 1852

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Lord Kelvin

James thomson

John Thomson

Saadi Carnot

When an electron and a positron are annihilated, then number of protons produced is.

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1

2

3

4

A freshly made sample of radioactive material gives a count rate of 8,000 counts per minute After twenty days it gives a count rate of 500 counts per minute What is the half life of the materials.

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5 days

10 days

40 days

20 days

The SI unit of impulse is.

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N m

N s

Kg ms -1

Both b and c

The band of colours is called.

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Spectrum

Prism

Medley

LASER

If length of second pendulum becomes four times than its time period will become

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Two times

Four times

Six times

Eight times

The strength per unit volume of a solid is called.

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shear stress

Shear strain

Bulk strength

Bulk modulus

In what form is the energy stored in an inductor.

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Magnetic

electrostatic

Magnetic and electrostatic

All of the above

The capacity of a spherical conductor is numerically equal to its.

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Surface area

Diameter

Radius

Volume

The law of gravitation was introduced by

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Huygen

Boyle

Newton

Pascal

A rod of refractive index 1.42 is immersed in a liquid of refractive index 1.42 the rod will

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Become invisible

appear slightly bent

Appear slightly raised

Reduce its refractive index

Balmer identified the spectral lines in the spectrum of hydrogen in

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1785

1885

1936

1966

Which of the following is nearly monochromatic light.

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Light from fluorescent tube

Light from neon lamp

Light from sodium lamp

Light from simple lamp

An electric Heater and a fan are marked 1000 W, 250 V and 100 W , 220 V respectively The resistance of fan is.

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Equal to that of heater

Greater than that of heater

Less than that of heater

Zero

The charge per unit volt which is a constant property of the system is known as the

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Dielectric constant

Permitivity

Capactance

Inductance

When a transverse wave is reflected on going from a more dense to a less dense medium.

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There is no phase shift

There is a 180 ^o phase shift

There is a phase shift of 360 ^o

A crest is transformed to a trough

Current in an electrolyte is carried by.

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Electron only

Anions only

Citations only

Mesons only

Why a positively charged object is made neutral by someone touching it.

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Electrons flow from the object

Protons flow onto the object

Protons flow from the object

Protons flow onto the object

The loudness of a sound deepness on its

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Wavelength

Frequency

Wave amplitude

Regularity

When a following field is governed by Maxwell's equations.

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Electrodynamics

Optics

electric circuits

All of these

The law of motion and gravitation were introduced by.,

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Albert Einstein

Issac Newton

Galileo

Archimedes

What is shapes of a pure note

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Sinwave

Sawtooth

Square wave

Triangular wave

The chain reaction is controlled by a series of rods usually made of.

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uranium

Cadimium

Boron

Steel

According to Coulomb's law what happens to the attraction of two oppositely charged objects as their distance of separation increases.

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Increase

Decrease

Remain unchanged

Cannot be determined

LASER is a device which can produce.

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Monochromatic beam of light

Coherent beam of light

An intense beam of light

All of the above

The dimensions of moment of inertia are

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[ML2]

[MLT-1]

[ML2T-1]

[ML-1T-2]

Which characteristics successively increases in the musical scale.

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Pitch

Quality

Loudness

Amplitude

Sunlight can undergo total internal reflection if it enters from

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Glass to air

Air to glass

Air to water

Water to glass

When a force of 16 N acts on a mass of 4 kg for a time of 4 s. What is the rate of change of momentum.

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1 kg m s-2

4 kg m s-2

8 kg m s-2

16 kg m s-2

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