Question # 1

If water in a closed bottle is taken up to the moon and opened, the water gets

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Freeze

Boiled

Dissociated into O₂and H₂

Evaporated

The work performed on an object does not depend on

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Force applied

Angle at which force is inclined to the displacement

Initial velocity of the object

Displacement

If every particle of the flow that passes a particular point, moves along the same path as followed by particles which passed the point earlier, then this flow is said to be

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turbulent

streamline

abrupt

none of them

Referring to above figure, due to change in current in the coil P, the change in magnetic flux

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Is associated with coil P

Is associated with coil S

Causes and induced current in coil S

All of these

None of these

When some compass needles are placed on a card board along a circle with the center at the wire, they will

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Point the direction of N-S

Set themselves tangential to the circle

Point in the direction of E-W

None of these

Point in direction of S-E

The liquid which conduct current is known as

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heating effect

chemical energy

electrolyte

ohm's law

Magnetic flux and flux density are related by

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Flux density = flux x area

Flux density = flux / area

Flux density = flux - area

None of these

When a body is performing S.H.M., its acceleration is

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inversely proportional to the displacement

directly proportional to the applied force

directly proportional to the amplitude

directly proportional to the displacement but in opposite direction

A body moving with uniform velocity has

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positive acceleration

negative acceleration

infinite acceleration

zero acceleration

In an interference pattern of Young's double slit(YDS) experiment:

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Bright fringesare wider than dark fringes

Dark fringes are wider than bright fringes

Both dark and bright fringes are of equal width

Central fringes are wider than the outer fringes

A high temperature, the proportion of shorter wavelengths radiation, emitted by the body

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decreases

first increases then decreases

increases

any one of them

One mole of (NH₄)₂HOP_{4 contains _ moles of hydrogen atoms:}

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1

5

6

9

The bright fringes are termed as

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minimum

maximum

bright spots

dark spots

In the formula for velocity of efflux v = √2gh, h is the

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Height of liquid column from bottom of vessel

Height of orifice from the bottom of the vessel

Height of liquid column above the orifice

Height of the vessel

Propagation of light in an optical fiber requires that light should be

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Refracted from air to fiber

Continuously refraction

Totally reflected within the fiber

Both B and C

Longitudinal strain can be produced in

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Glass

Water

Honey

Hydrogen gas

The unit of power of a lens is

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Meter

Watt

Horsepower

Dioptre

For the same kinetic energy,the momentum is maximum for:

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An electron

A proton

A deuteron

An a particle

Slope of velocity time graph is

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Speed

Work

Power

Acceleration

The high blood pressure is known as

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Diastolic

Systolic

High blood pressure

None of these

Distance covered by a freely falling body in 2s will be

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4.9 m

19.6 m

29.2 m

44.1 m

A converging lens in used to from an image on a screen when the upper half of the lens is covered by an opaque screen

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Half the image will disappear

No change either in size or in intersity

Intensity of image will increase

Intensity of the image will decrease

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