Question # 1

The pitch of sound a determined by its

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Speed

Frequency

Direction

Number of beats

If a wave vibrate 10 times in 1 s with a speed of 10 m s-1 the correct wavelength of the wave is.

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1 m

10 m

20 m

100 m

Who is generally credited with the invention of first optical microscope.

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Hans Lippershery

Glavanni faber

Galileo

issac Newton

A spectroscope sorts out

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Atoms

Molecules

Elements

Isotopes

As the mass number varies, which of the quantities does not change w.r.t nucleus.

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Mass

Volume

Binding energy

Density

When the deforming force applied on a body produces change in length then it is said to be

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Tensile stress

compression stress

Shear stress

Shear modulus

Lenses of what diameter are usually not practical.

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Less than 1 m

Larger than 1m

Larger than 5 m

Larger than 10 m

For polarization , the direction of oscillation has to be perpendicular to the direction of travel sound waves are longitudinal waves so they cannot be.

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Reflected

Deflected

Diffracted

polarized

A bulb of 100 W is connected to a 160 V supply What will be the power consumed.

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25 W

30 W

50 W

64 W

If a charged body is moved against the electric field it will gain.

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P.E

K.E.

Electrical P.E.

Gravitational energy

The word fluid means

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To rise

To fall

To flow

To oppose

The maximum displacement from the undisturbed position of the medium to the crest top is called.

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Wavelength

Amplitude

Period

Frequency

A car is travelling with uniform acceleration the road has check posts every 100 m When the car passes one post , it has a speed of 10 m s-1 and when passes the next one its speed is 20 ms-1 What is the cars acceleration.

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0.67 m s-2

1.5 m s2

2.5 m s-2

6.0 m s-2

Phenomenon of radioactivity is due to disintegration of.

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Proton

Neutron

electron

nucleus

The electrons behave as wave because.

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They can be diffracted by a crystal

They can be defecting by magnetic field

They can be deflecting by electric field

they can produce ions in gases

Wave mechanics was introduced by

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G.P. Thomson

De-Broglie

Heisenberg

Max Planck

What information is given by the tangent to a field that point of electric field.

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Magnitude

Direction

Proper unit

Dimensions

Which gas strictly obeys gas laws.

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Hydrogen gas

Inert gas

Ideal perfect gas

Helium gas

Coulomb's law for the electrostatic force between two electric charges resembles the

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Law of conservation of energy

Law of conservation of mass

Newton's law of gravitation

Newton's law of motion

The SI unit of gravitational constant G is.

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kg m-1 s-1

kg m2 s-2

kg m3 s-2

kg m2 s-1

In which of the following controlled nuclear chain reaction is used to liberate energy.

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Nuclear bomb

Atomic bomb

Hydrogen bomb

Nuclear reactor

The most common trivalent impurities are

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Boron , indium

Arsenic, indium

Arsenic, Antimony

Aluminium, Boron

The particles equal in mass or greater than protons are called.

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Mesons

Bosons

Baryons

Nucleons

Amorphous solids are also called

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Crystalline solids

Glassy solide

super conductors

Polymeric solids

Angular simple harmonic motion is.

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Periodic rectilinear motion

Independent of any applied torque

Periodic rotational motion

Never defined

What happens to the intensity or the brightness of the lamps connected in series as more and more lamps are added.

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Increases

Decreases

Remains the same

Cannot be predicted

A bodybuilders uses a chest expander with five springs it takes a force of 20 N to Pallone spring out by 15 cm how much force will be needed to extend the expander by 15 cm.

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50 N

75 N

150 N

1000 N

The heat frequency is the

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Sum of the two frequenceis

Produce of the two frequency

Difference of the two frequencies

Ratio of the two frequencies

Special theory of relativity deals with the events in the frames of reference which move with constant.

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Time interval

Acceleration

Momentum

space interval

Which of the following statements concerning G and g is true.

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g is scalar white g is a vector

g is inversely proportional to the mass of the planet

g is independent of the mass of the planet

both G and g have the same units

In which process the passage of an electric current through a conductor releases heat.

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Joule heating

Ohmic heating

resistive heating

All of these

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