Question # 1

When a conductor moved with its length parallel to the lines of magnetic fled:

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An emf is induced across its ends

Emf induced is similar to that of a battery

Emf passes through the conductor

Both A and B

None of these

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

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A - Z

A + Z

Z

A

Which quantity has the same units as impulse

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force

work

linear momentum

acceleration

A typical rocket ejects the burnt gases at speeds over

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400 ms^-1

40000m s^-1

40000 ms^-1

60000 ms^-1

A particle having the mass of electron and charge of a proton is called a

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photon

position

antiproton

antineutrino

Referring to above figure, due to change in current in the coil P, the change in magnetic flux:

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Is associated with coil P

Is associated with coil S

Causes an induced current is coil S

All of these

None of these

In metallic crystals which of the following thing remains constant

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amplitude of oscillations

temperature of solid

average atomic positions

all of them

A medium of dielectric constant 'K' is introduced between the plates of parallel plate condenser. As a result its capcitance

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Increase k time

Decreases k times

Decreases 1/K times

Remains unchanged

In Bernoulli's theorem the relation between velocity and pressure is

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Inverse

Direct

None of the above

Both a and b

The earth's potential is taken as

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Negative

Positive

Zero

Infinite

The current in LCR circuit will be maximum whenωis

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As large as possible

Equal to natural frequency of LCR system

The viscosity of red blood cells increase than water is from

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2 to 3 times

3 to 4 time

4 to 5 times

3 to 5 times

If we go above the surface of earth equal to the radius of earth than value of g

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g

g/4

g/9

g/2

If the plane polarized light is incident on the second sheet of Polaroid, no light is emitted when their axes are

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Parallel to each other

Perpendicular to each other

In between two positions

None of these

Crystalline solid do not show

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Sharp melting points

Flat faces

Long range order

Isotropic expansion coefficients

Electrons of an isolated atom are bound to the nucleus, and?

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can only have distinct energy level

can only have same energy level

may or may not have distinct energy

none of them

Geometrical optics cannot give following characteristics for a microscope

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Image position

Image size

Resolution of image

Any of the above

When the velocity of the car is constant. The velocity time graph is a

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Straight line

straight line rises the same height for equal intervals of time

Horizontal straight line

None of these

The wave length of x-rays is of the order of

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10^-17 m

10^-4 cm

10^-9 m

10^-10 m

Light appears to travels in straight lines since

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It is not absorbed by the atmosphere

It is reflected by the atmosphere

Its wavelength is very small

Its velocity is very large

The optical fibre is covered for protection with

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rubber jacket

plastic jacket

steel jacket

copper jacket

Synthetic materials fall into the category of

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crystalline solids

amorphous

polymeric solids

all of them

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