Question # 1

Wave nature of particle was proposed by

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Einstein

Plank

De-Brogile

Max well

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

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1923

1927

1931

1935

None of these

Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called

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tiny regions

domains

vectors

none of them

A pair of quark and antiquark makes a:

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Meson

Baryon

Proton

Neutron

None of these

The waves produced in a microwave oven have frequency

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2450 Hz

2450 K Hz

2450 M Hz

2450 G Hz

A body is executing free vibrations when it oscilates

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with the interference of an external force

without the interference of an external force

with the interference of an internal force

none of them

Which of the following has the greatest coefficient of viscosity?

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water

gasoline

honey

tar

The short distance between two points direction from its initial point to final point is called:

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Velocity

Displacement

Speed

Distance

When the surfaces are coated with a lubricant, then they

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Stick to each other

Slide upon each other

Roll upon each other

None of these

A uniform resistance wire of Length L and diameter d has a resistance R. Another wire of same material has length, 4L and diameter 2d, the resistance will be

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2 R

R

R/2

R/4

The current that flows through the coil of a motor causes

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Its shaft to revolve

Its brushes to rotate

Motor to move

Its shaft to rotate

None of these

Converse of pair production is known as

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Compton effect

annihilation of matter

photoelectric effect

none of these

There is no way to detect:

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Absolute uniform motion

Accelerated motion

State rest

State of motion

None of these

A non-inertial frame of reference is that frame of reference in which

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a = 0

a > 0 or a < 0

v = 0

none of them

Swimming becomes possible because of______law of motion.

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First

Second

Third

None of these

Unit of viscosity is:

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Kg m^-1sec^-1

N s m^-2

J s m^-3

All of these

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

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greater than the frequency of applied force

equal to the frequency of applied force

less than the frequency of applied force

all of them

A hole in p-type my be due to:

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Trivalent impurity

Breking of some covalent bond

Pentavalent impurity

Germanium

Either (A) or (B)

Gaussian surface is always:

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Rectangular

Spherical

Cylindrical

Box shape

Any of these

An electronic computer is basically a vast arrangement of electronic switches which are made from

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Resistors

Transistors

N -type crystals

P-Type crystals

Capacitors

A the top of the trajectory of a projectile, the directions of its velocity and acceleration are

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Perpendicular to each other

Parallel to each other

Inclined to each other at an angle of 45°

Anitparallel to each other

In the phenomenon of hysteresis

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magnetism leads the magnetising current

magnetism lags behind the magnetising current

meganetism goes along the magnetising current

none of them

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

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Double

Remains constant

Half

None of these

A heavily damped system has a fairly

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sharp resonance curve

flat resonance curve

both of them

none of them

If the acceleration of a body is not uniform, then velocity-time graph will be:

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Curve

Straight line

Sphere

All of these

Which of the following options correctly states the equation of continuity for an ideal fluid?

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A₁A₂= V₁V₂

A₁/A₂= V₂/V₁

A₁/A₂= V₁/V₂

none of the above

A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding?

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4.2 m

8.4

12.6

None of these

In compressional wave,the layer of medium having reduced pressure is called:

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Compression

Elasticity

Node

Rarefaction

The magnitude of induced emf depends upon the:

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Rate of decrease of magnetic field

Rate of change of magnetic field

Rate of increase of magnetic flux

Constancy of magnetic field

None of these

Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as

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ON switch

off switch

function switch

none of these

What temperature is the same on Celsius scale as well as on Fahrenheit scale?

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32°C

-32°C

-40°C

-212°C

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