Question # 1

1 gm-cm^-3is equal to:

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10³kg-m^-3

10^-3kg-m^-3

1 kg-m^-3

10⁶kg-m^-1

Faraday's law of electromagnetic induction has been used in the construction of:

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Galvanometer

Voltmeter

Electric motor

Electric genrator

Commutator

The bob of a simple pendulum is suspended by

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string

heavy inextensible string

light extensible string

light inextensible string

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 and induced current in coil S

All of these

None of these

The unit of spring constant is:

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J-sec

Metre

Nm^-1

None of these

The year when A.H. compton was awarded Nobel Prize is:

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1923

1927

1931

1935

None of these

If the distance between two charges is doubled, the force between them will become:

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Double

Half

Three times

One fourth

One third

Zirconia is classified as:

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Ceramic solid

Ionic compound

Metal

Either (A) or (B)

Either (B) or (C)

The electric field lines start from:

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Positive charge

Negative charge

Either A and B

Neutron

An atom

The velocity given to a body to go out of the influence of earth's gravity is known as:

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Terminal velocity

Orbital velocity

Escape velocity

None of these

The He-Ne laser discharge tube is filled with:

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85% He

15% He

50% He

60% He

85% Ne

A man is an elevator descending with acceleration will conclude his weight has

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Increase

Decrease

Remain constant

Become zero

A force applied on a body produces acceleration in

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Its opposite direction

Its own direction

Right angle to the force

None of these

Viscosity of methanol at 30^oC in NSm^-2

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0.341 × 10^-3

0.357 × 10^-3

0.369 × 10^-3

0.510 × 10^-3

the ratio of mean K.E of chlorine and oxygen molecules at same temperature is

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16 35.5

35.5 16

(35.2)²16

1 1

As this temperature scale is independent of the working substance, therefore can be applied at

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High temperature

Low temperature

Very low temperature

None of these

The number of molecules in one mole of gas is equal to:

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Avogadro number N_A

Gas constant R

Boltzmann constant k

None of these

The dimensional formula for modulus of rigidity is:

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ML^-1T¹

ML^-2T²

MLT¹

ML^-1T^-2

In YDS experiment, condition for constructive interference is that path difference is equal to

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nλ

mλ

(n + 1/2)λ

(m + 1/2)λ

The path difference and phase difference are related to each other as

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Phase difference = (2π) x path difference

Phase difference = (2π/λ) x path difference

Phase difference = (λ/2) x path difference

Phase difference = (2λ/π) x path difference

A body moving in circular motion with constant speed has

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Constant velocity

Constant acceleration

Constant kinetic energy

Constant displacement

Which one of the following is polymer

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Polythene

Polystyrene

Nylon

All

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