Question # 1

The measure of the deformation in a solid when stress is applied to its is called

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elastic constant

young's modulus

strain

elasticity

The neighbours of every molecule in crystalline solids are arranged in

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an irregular manner

a regular manner

any manner

none of them

Graph of Black body radiation is example of

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Band spectra

Continuo's spectra

Line spectra

All

The instrument used to gather information form the far side of the universe is

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Compound microscope

Radio telescope

Astronomical Telescope

Simple microscope

The vertical and horizontal range will be equal id angle of projection is

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76°

45°

60°

120°

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

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n/AL

Al/n

nAL

nA/L

How many isotopes of helium are present?

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1

2

3

4

Tick the series which lies in the visible region:

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Lyman series

Balmer series

Paschen series

Brackett series

P fund series

The unit of decay constant is:

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Second

Metre

Hour

Year

Second^-1

Silicon can be obtained from:

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Lead

Uranium

An isotope of oxygen

Sand

The wave form of SHM is

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Pulsed wave

Square wave

Triangular waved

Sine wave

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

The galvanometer can be made sensitive if the value of the factor C/BAN is

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constant

small

large

none of these

Force is a:

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Scalar quantity

Base quantity

Derived quantity

None of these

Current provided by a battery is maximum when

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Internal resistance equal to external resistance

Internal resistance is greater than external resistance

Internal resistance is less then external resistance

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

The sum of two or more vectors is equal to a single vector which is called:

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Component vector

Resultant vector

Product vector

None of these

Energy is not carried by

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Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

The nucleus left after the emission of some radiation is called:

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Parent nucleus

Daughter necleus

Mother necleus

Any of these

None of these

An A.C varies as a function of

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Current

Voltage

Time

Charge

A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is

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17 m/s

33 m/s

17.5 m/s

none

When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency

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9.4 kHz

940 kHz

94 kHz

None of these

To display a digit of EIGHT, the number of ON LED'S are:

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Two

Three

Five

Seven

Eight

A body moving with an acceleration of 5 m/sec²started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds?

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150 m

250 m

350 m

400 m

Nucleus of a hydrogen atom may contain:

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One neutron only

Two protons and one neutron

Two protons and two neutrons

Aany of above

One proton only

Root out the conventional source of energy:

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Energy from blomass

hydroelectric energy

Geothermal energy

None of these

Centripetal acceleration is also called _______ acceleration:

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Tangential

Radial

Angular

None of them

The example of reversible process is

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an explosion

changes occur suddenly

slow compression of a gas

all of them

Which of the following four statements is false?

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A body can have zero velocity and still be accelerated

A body can have a constant velocity and still have a varying speed

A body can have a constant speed and still have a varying velocity

The direction of the velocity of a body can change when its acceleration is constant

Amorphous solids:

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Have definite melting points

Are called glassy solids

Have no definite melting point

Both (B) and (C)

Both (A) and (C)

When a fluid is in motion, its flow can be considered as

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turbulent

streamline

either or them

neither of them

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