Question # 1

How many isotopes of helium are present?

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1

2

3

4

According to the Max plank, energy is redialed or absorbed in

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discrete packets

continuous waves

either of them

none of these

A galvanometer is an instrument used to

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measure voltage across a circuit

detect current in a circuit

measure current flowing through a circuit

none of these

0.1 kg mass will be equivalent to the energy

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9 x 10¹⁵J

5 x 10⁸J

6 x 10¹⁶J

9 x 10^-16J

Absolute zero is considered as that temperature at which:

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All liquid become gases

All gases become liquid

Water freezes

None of these

Position and momentum of a particle cannot both be measured simultaneously with perfect accuracy. This is the statement of

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photoelectric effect

pair production

Compton effect

uncertainty principle

Total number of base units are

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Three

Five

Seven

Nine

If the distance between the plates of a parallel plate condenser of capacity 10μF is doubled then new capacity will be

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5μF

20μF

10μF

15μF

Good absorbers of heat are

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Poor emitters

Non emitters

Good emitters

Highly polarized

In case of metallic conductors, the charge carriers are

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Protons

Electrons

Antiprotons

Positrons

Both A and B

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

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More, lesser

Lesser, more

Both A and B

Lesser, lesser

The light signals are sent from the source

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A ordinary source

A monochromatic light source

A moulticolour source

None of these

The low blood pressure is known as

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Diastolic

Systolic

Low blood pressure

None of these

Gauss s law in electrostatics is true when the charges enclosed in Gaussian surface are

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Stationary only

Moving only

Moving or stationary

None of these

A person is standing on a rotating stool spreading his arms.He suddenly contracts his arms.His

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Angular momentum increases

Momentum of inertia increases

Momentum of inertia decreases

Angular momentum decreases

The information received at the other end of a fibre can be inaccurate due to

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dispersion of light signal

spreading of light signal

both of them

none of them

Arsenic antimony or phosphorus are impurities of

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p-type

n-type

May be p-type or n-type

None of these

Human body is composed of particles to produce electric force are

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Atoms

Molecules

Charges

All of them

If a transverse wave has a speed of 10 m/ sec and frequency of 10 cycle/ sec itswavelength is:

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1 m

10^-2 cm

10 m

10 cm

When a body moves in a circular path,no work is done by the force since.

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Force and displacement are perpendicular to each other

The force is always aways from the centre

There is no displacement

There is no net force

Bulk modulus for glass is

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2

31

36

42

Reverse process of vector addition is called

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Negative of a vector

Subtraction of vector

Resolution of a vector

Multiplication of a vector

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