Question # 1

The relation V = IR represents

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Ampere law

Faraday's law

Ohm's law

Len's law

The amplitude of oscillation of each atom in a metallic crystal rises with the

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rise in temperature

decrease in temperature

even temperature remains constant

all of them

Wave length of that color as compared to that of violet color is:

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Smaller

Longer

Equal

None of these

Consider a photon of continuous X-ray and a photon of characteristics X-ray of same wavelength. Which of the following is/are different for the two photons

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Frequency

Penetrating power

Energy

Method of creation

Substances that do not flow easily have

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large coefficient of viscosity

small coefficient of viscosity

either of them

none of them

Light waves are:

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Transverse wave

Longitudinal wave

Compressional wave

None of them

Most of the geysers occur in:

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Volcanic regions

Magnetic regions

Northern region

None of these

Mechanical waves on the surface of a liquid are

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Transverse

Longitudinal

Torsional

both transverse and longitudinal

The center of mass of a sphere lies at:

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The axis of the sphere

Circumference of sphere

Center of the sphere

None of them

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

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Protactinium

Actinium

Uranium

Radium

Redon

When two protons are brought closer potential energy of both of them:

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Increases

Decreases

Remains same

None of these

Inverting amplifier circuits have

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A very high input impendance

A very low input impendance

A low output impendance

Both A and C

For full wave rectification, the minimum number of diodes used is:

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1

2

3

4

An oil film floating on water surface show colours due to

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Interference

Diffraction

Scattering

Reflection

The more general form of second law of motion is

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F = ma

F x t = mV_f- mV_i

Both

None of these

The dimensional formula for angular momentum is:

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(M°L²T^-2)

(ML²T^-1)

(MLT^-1)

(ML²T^-2)

If there were no intermolecular forces between gas molecules, the pressure due to a given sample a gas will be

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Increased

Decreased

Unchanged

None of these

A pair of forces equal in magnitude and opposite in direction with non-coincident lines of action is known as

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A couple

A moment of force

A null vector

All of these

During adiabatic expansion change of 2 moles of gas the internal energy is 100 j, the work done this expansion is

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Zero

-100 J

200 J

100 J

Which of the following is not a perfectly inelastic collision?

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Striking of two glass balls

A bullet striking a bag of sand

An electron captured by a proton

A man jumping onto a moving cart

According to Bernoulli s theorem velocity and pressure

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Are directly proportional

Are inversely proportional

Have no relation

Are equal

Two resistances 4Ω and 6Ω are in series they are in parallel with a 10Ω resistance.The equivalent resistance is

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5Ω

8Ω

12Ω

20Ω

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