Question # 1

A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle:

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Circular motion, circumference

Vibrator, chord

SHM, diameter

SHM, circumference

A typical rocket consists of fuel

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more than 60% of launch mass

less than 60% of launch mass

less than 80% of launch mass

more than 80% of launch mass

Electron is a particle whose mass is:

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Greater than that of a proton

Smaller than of a proton and greater than mass of neutron

Smaller than that of proton or neutron

Greater than that of an atom

The curve representing an isothermal process is called

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adiabat

isotherm

fixed temperature

none of them

The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is:

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3 N

4 N

5 N

6 N

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

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ammeter

voltmeter

galvanometer

avo-meter

The S.I unit of frequency is

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Vibrations s^-2

Ms^-1

Hertz

s^-1

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

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the driving force is large

the driving force is zero

the driving force may be feeble

all of them

The induced current in a conductor depends upon

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Resistance of the loop

Speed with which the conductor moves

Any of these

Both A and B

None of these

When a body moves with a constant speed in a circle:

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No work is done on it

No acceleration is produced in the body

Velocity remains constant

None of these

Crystalline solids are in the form of:

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Metals

Ionic Compounds

Ceramics

Both (A) and (B)

All of these

The relative permitivity ∈_r for distilled water is

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2.9

1.0008

2.0

2.1

Commercial polarizing material is

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Colour glass

Infra red glass

Polaroid glass

None of these

The dielectric constant K of an insulator cannot be

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2

10

5

∞

A bullet train move with the velocity of

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400 Kmh^-1

460 Kmh^-1

500 Kmh^-1

510 Kmh^-1

For earth the escape velocity is 11.2 kms^-1. For a planet whose mass and radius are twice those of the earth, the escape velocity will be

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44.8 kms^-1

22.4 kms^-1

11.2 kms^-1

2.8 kms^-1

One poise = ___________.

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0.1 Nsm^-2

0.1 Pascal second

1.01 x 10⁵N

both A and B

Stress may cause a change in:

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Length

Volume

Shape

Any of these

None of these

A capacitor is a perfect insulator for electric

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Direct current

Alternating current

Charge

None of these

Substances which undergo plastic deformation until they break, are known as

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brittle substances

ductile substances

plastic substances

neither of them

The dimensions of coefficient of viscosity are

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ML^-1T²

ML²T¹

ML^-1T¹

Nono of these

Nm^-2 or Pa are the units of

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Stress

Strain

Modulus of Elasticity

a and b

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