Question # 1

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

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rotatory motion

motion under gravity

angular motion

simple harmonic motion

The Phenomenon of generation of induced emf is called

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Electrostatic induction

Magnetic induction

Electromagnetic induction

Electric induction

Both A and B

Phenomenon of radioactivity is due to disintegration of

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nucleus

neutron

proton

molecule

The definite number of significant figures in 5000 is:

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Four

Three

Two

One

The induced emf in a coil is proportional to:

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Magnetic flux through a coil

Rate of change of magnetic flux through the coil

Area of the coil

Product of magnetic flux and area of the coil

At resonance frequency the impedance of parallel resonance circuit is

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Maximum

Minimum

Zero

None of the above

The artillery shells travel along parabolic paths under the influence of

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magnetic field

electric field

electromagnetic field

gravitational field

If the absolute uncertainty of an instrument is 0.0a1 cm, then its least count will be :

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0.005 cm

0.01 cm

0.02 cm

0.001 cm

The driection of vector si space is specified by:

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One angle

Two angles

Three angles

None of above

According to slok's law, drag force depends on

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Radius of the spherical body

Terminal velocity of body

Coefficient of viscosity

All of above

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

A relationship between Gauses of magnetic induction and Tesla(T) is given by

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G 10^-3T

G = 10^-2T

G = 10^-4T

G = 10^-1T

If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity

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Fringe width will decrease

Fringe width will increase

Fringe width will remain unchanged

Fringe will become less intense

No spark plug is needed in

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petrol engine

diesel engine

both of them

none of them

The study of fluid in motion basically involves law of conservation of:

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Mass

Energy

Change

Both A and C

Both A and B

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

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R/2

P

2P

Depending on the relative mass of the gases

The amount of energy equivalent to 1 a.m.u is

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9.315 Mev

93.15 Mev

931.5 Mev

2.22 Mev

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

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turbulent

streamline

either or them

neither of them

Electron gun consist of

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three anodes

heating cathode

three anodes

three anodes , heating cathode, grid

The unit of induced emf is:

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Volt

Nm/As

Joule coul^-1

Both A and C

All of these

At high speed, fluid friction _____ and fuel consumption ___,:

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Increases, decreases

Increases, increases

Decreases, increases

None of these

The strength of magnetic field at certain points around a wire depends upon:

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Value of current passing

Distance from the current element

Color of the material

Both (A) and (B)

Both (B) and (C)

The dimension of linear inertia is:

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MLT²

ML°T^-2

ML°T°

MLT^-1

The size of the image is maximum when its distance from the magnifying glass is:

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0.10 m

0.15 m

0.20 m

0.25 m

Blood vessels can be stretch like rubber, therefore they are

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rigid

hard

very thick

not rigid

When a water droplet falling freely through air, the drag force on water droplet increases with th

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decrease in speed

increase in speed

pressure

none of them

With the help of 50 K v electron microscope, a resolution of

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0.5 to 1 m to possible

1 m to 10 m is possible

0.5 to 1 nm is possible

1 to 10 nm is possible

An inertial frame is that frame in which

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a>0

a=0

a<0

none of these

Energy gas behaves like an ideal gast at

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High temperature and low pressure

Low temperature and high pressure

Both A and B

None

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

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Greater than the speed at which they pass from left to right

Less than the speed at which they pass from left to right

The same speed at which they pass from left to right

Any of above

None of them

When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:

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Along the tangent

Toward the centre

Away from the centre

None of them

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