Question # 1

The dimensions of viscosity are

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[MLT-1]

[MT-2]

[ML-1T-1]

[ML2T-1]

Angular frequency time period and frequency in SHM do not depend upon.

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Mass

Force constant

Amplitude

All of these

A bodybuilders uses a chest expander with five springs it takes a force of 20 N to Pallone spring out by 15 cm how much force will be needed to extend the expander by 15 cm.

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50 N

75 N

150 N

1000 N

A resistor connected to a battery is heated due to current passing through it. Which of the following quantity does not change.

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Resistivity

Resistance

Number of free electrons

Drift velocity

The near point of a person is 50 cm and his far point is 200 cm The power of the lenses which his spectacles should have for reading will be

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+D

+2D

+4D

-2D

The energy delivered to the tissue per unit mass is called the absorbed dose of.

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X rays

gama rays

Radiation

energy

The force applied on unit area of a body to produce any change in shape volume or length is known as.

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Strain

Stress

Tensile strain

Tensile stress

Which principle is in effect when a ship displaces ocean water.

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Bernouli's

Pascal's

Hook's

Archimedes

The most suitable material for moderator in a nuclear reactor is.

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B

Cd

D2O

Uranium

If the current in a wire which is placed perpendicular to a magnetic fields increases the force on the wire.

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Increases

Decreases

Remain the same

Will be zero

A radio tuning capacitor is.

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Cylindrical capacitor

Spherical capacitor

parallel plates capacitor

Cylindrical condenser

A gallium atom is.

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Monvalent

Diavalent

Trivalent

Pentavalent

The amplitude of a vibrating body at resonance place in vacuum is.

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zero

Maximum

Minimum

Infinite

The apaceing between fringes is a Young's double slit pattern will be increased, if we decrease the

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Wavelength of the souce light

Distance from slite to screen

Width of the slits

Separation of the slits

The diver spins faster when moment of inertia becomes

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Smaller

Greater

Double

zero

A given mass of air occupies 12 m2 at normal atmospheric pressure if the pressure is increased to 4 times the original value without changing the temperature what volume will the air occupy.

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3 cm3

6 cm3

9 cm3

12 cm3

The study of atomic structure of crystals by x rays was initiated by.

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Mosely

Young

Huygen

Bragg

When the deforming force applied on a body produces change in volume then it is said to be

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Tensile stress

Compression stress

Shear stress

Shear modulus

In the equation P = IV cos Theta Cos theta is known as

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Phase angle

Liming angle

Phase

Power factor

The current passing across a p-n junction due to minority charge carriers is called

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Reverse current

Forward current

Leakage current

Both a and b

If the presence of air friction, the path of a projectile appears as.

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Straight line

Parabola

Hyperbola

zig zag

Which magnetic properties is inherent in all materials.

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Para magnetism

diamagnetism

Ferromagnetism

demagnetism

The impedance of the circuit at resonance frequency is

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Minimum

Maximum

Zero

Infinity

Why is an oxide coated filament used in vacuum tube.

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It has a longer lime

Irt can with stand high

It emit electrons at low temperature

It reduces the effect of space charge

The centre of the sun produces a large amount of energy what is the source of this energy.

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Chemical reaction

Nuclear fission

Nuclear fusion

Radioactive decay

Who discovered neutron in 1932.

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Chadwick

Bohr

Rutherford

Fermi

When a posirtron is emitted it causes.

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Mass number to increase by one

mass number to decrease by one

Atomic number to decrease by one

Atomic number to increase by one

The Compton effect in X-rays proves that

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Electrons have wave property

x-rays have wave properly

X-rays have particle characteristics

Electrons cannot exist

Three tuning forks of frequencies 400 Hz. 401 Hz and 402 Hz are sounded together The frequency of beats per sound is.

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0

1

2

3

Periodic motion is a motion.

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Under the influence of an elastic restoring force

That repeats it self in equal intervals of time

Back and forth over the same path

With constant acceleration

When two identical waves are superimposed the velocity of the reasultant wave.

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Increases

Decreases

Become zero

Remain unchanged

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