Question # 1

The velocity of a projectile is maximum

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at the point of projection

just before striking the ground

at none of them

at both of them

Nowadays, Most of the electric energy is produced by the A.C. generators using:

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Hydal water

Geothermal energy

Solar energy

Biomass

Both (B) and (D)

To sources are said to be coherent if they have:

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Same amplitude

Same wavelength

Definite phase relation with each other

None of them

Bernoulli's equation is based upon law of conservation

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Mass

Momentum

Energy

None of these

As compared to the distance measured by an observer on Earth, the distance from Earth to a star measured by an observer in a moving spaceship would seem:

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Smaller

Lerger

Same

Much larger

None of these

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

When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the

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base and emitter

collector and emitter

base and collector

any one of these

The relation V = IR represents

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Ampere law

Faraday's law

Ohm's law

Len's law

A.C. can be measure with the help of

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Nuclear effect

Magnetic effect

Chemical effect

Heating effect

Every crystalline solid has

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definite melting point

different melting points

may or may not be definite

none of them

When velocity of moving body is doubled, the quantity which is also doubled is its:

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K.E.

Acceleration

Momentum

P.E.

Which part of the spectrum is most visible?

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Red

Violet

Yellow

Yellow-green

In order to increase the K.E of ejected photo electrons, there should be an increase in:

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Intensity of radiation

NoneI

Frequency of radiation

Both (b) & (c)

A truck and a car are moving with equal velocity. On applying the brake both will stop after certain distance then

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Truck will cover less distance before rest

Car will cover less distance before rest

Both will cover equal distance

None

Tick which of the following is not state variable:

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Heat energy

Pressure

Entropy

Volume

The distance between the objective and eye-piece of a telescope in normal adjustment is

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f/₀-f_e

f₀+f_e

2f_e-f_e

None of these

The rate of decay radioactive substance:

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Is constant

Decrease exponentially with time

Varies inversely with time

Decrease linearly with time

Adjacent layers in laminar flow are

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Min with each other

Smoothly slide one over the other

oppose each other

None

Age of the Earth is

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14 × 10¹⁷ sec

1.4 × 10¹⁹ sec

1.4 × 10¹⁷ sec

1.4 × 10¹⁵ sec

Domains are present only in

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Diamagnetic material

Para magnetic material

Ferromagnetic material

All of these

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Work

Pressure

Momentum

Power

Light waves are:

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Transverse waves

Longitudinal waves

Compressional waves

None of them

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