Question # 1

An induced current can be produced by:

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Constant magnetic field

Changing magnetic field

Varying magnetic feild

Constant electric field

None of these

Mass of proton is

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1.67 x 10^-27kg

1.67 x 10^-31kg

1.66 x 10^-34kg

1.67 x 10^-17kg

The power factor of resonant series circuit is

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1

0

-1

0.5

The closed loop gain of the non-inverting amplifier is given by

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G = R₂/R₁

G = -R₂/R₁

G = 1 - R₂/R₁

G = 1 + T₂/R₁

The instantaneous acceleration of a body moving with constant speed in a circle:

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Remains constant

Is called centripetal acceleration

Tangential acceleration

None of these

Which of the following is scalar quantity?

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Electric potential

Velocity

Momentum

Force

While deriving the equation for pressure of a gas we consider the

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rotational motion of molecules

vibrational motion of molecules

linear motion of molecules

all of them

When the pn-junction is forward biased. the current flows through it is of the order of

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mili-amperes

amperes

nano-amperes

micro-amperes

Suppose the water flows out from a pipe at 3kg s^-1and its velocity changes from 5m s^-1to zero on striking the wall, then the force exerted by water on wall will be

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5 N

10 N

15 N

20 N

Escape velocity from surface of Moon as compared to that from Earth surface is:

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Greater

Smaller

Equal

None of thes

The force between two chares 0.06 m apart is 5 N. If each charge is moved towards the other by 0.01 m, then the force between them will become

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7.20 N

11.25 N

22.50 N

45.00

The quantity of motion of the body is called

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Force

Acceleration

Momentum

None of these

In newton's rings apparatus, we also use:

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Spectroscope

Telescope

Microscope

Any of these

A ball tied to the end of a string is swing into a vertical loop then the tension will be maximum at the

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Highest point

Bottom point

Neither at top nor at bottom

None of these

The danger signals are red while the eye is more sensitive to yellow because

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Scattering in yellow colour is less than that of red

Red light is longer in wavelength than yellow light

Scattering in red is less than that of in yellow

Red colour has greater frequency than yellow light

Because of large mass when 𝑎 −paricle enters the atom or molecule it:

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Moves in zigzag path

Moves along straight line

Moves along circular path

None of these

Two row boats moving parallel in the same direction and pulled toward each other due to the application of Bernoulli's equation

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Stake's theorem

Toricelli's theorem

Venturi relation

None of these

Polythene,polystyrene and nylon are example of

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Polymeric solids

Crystalline solids

Glassy solids

Biomass is a potential source of renewable energy. This includes all the organic material such as

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Crop residue

Natural vegetation

Animal dung

All of these

When relatively simple molecules are chemically combined into massive molecules, the reaction is called:

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Fission reaction

Fusion reaction

Polymerization reaction

Any of these

None of these

Direction of torque can be found out by

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head to tail rule

parallelogram rule

left hand rule

right hand rule

Huygen's principle is used to study the

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formation of wavefronts

propagation of wavefronts

nature of light

speed of light

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