Question # 1

Two forces of 10 N and 8 N are applied simultaneously to a body. the maximum value of their resultant is:

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2 N

- 2 N

18 N

36 N

The unit of decay constant is:

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Second

Metre

Hour

Year

Second^-1

Aluminum is a:

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Good insulator

Bad conductor

Both (A) and (B)

Excellent conductor

Semiconductor

Electric lines of force

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Intersect each other

Are always parallel

Are always anti-parallel

Never intersect

None of these

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

.Depletion region contains:

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Protons

Positive ions

Negative ions

Both (B) and (C)

Both (A) and (C)

The total energy of spring mass system is

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zero

changing with time

constant

none of them

Swimming becomes possible because of______law of motion:

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First

Second

Third

None of these

The product of the pressure and volume of an ideal gas is

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A constant

Approximately equal to the universal gas constant

Directly proportional to its temperature

Inversely proportional to its temperature

The obvious effect/s of current is/are:

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Heating effect

Magnetic effect

Chemical effect

Both (C) and (B)

All of these

Area under the force displacement graph gives

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Power

Work

Heat

Energy

The derived unit of pressure is

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kg/Ns

kgm²/s²

kg/m²s²

kg/ms²

Earth is considered to be

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a non-inertial frame

an inertial frame

an accelerated frame

none of the above

Precision or absolute uncertainty and the least count have the relation in which absolute

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uncertainties is double the least count

Equal the least count

Half the least count

None of these

Dolphins have bodies to assist their movement in water are

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Irregular bodies

Closer to streamline body

Stream line body

None of these

A lift is moving downwards at a very high constant speed. A passenger present inside the lift standing on a weighing machine would notice that his weight

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is shown as zero on the scale

becomes zero

remains constant at a value less than this real weight

remains the same as his real weight

The blood pressure of about 120 torr is called the

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Diastolic pressure

Systolic pressure

Minimum diastolic pressure

Dangerous blood pressure

In case of YDS experiment, the distance of the mth bright fringe on the screen from center is

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Y = (m + 1)λL/d

Y = mλL/d

Y = (m + 1/2)λL/d

None of these

Mirage is a phenomenon due to

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Reflection of light

Refraction of light

Total internal reflection of light

Diffraction of light

To get three images of a single object,one should have two plane mirrors at an angle of

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90°

120°

30°

160°

The Dimensions of volume is

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[V³]^-1

[L^-3]

[L]³

None of these

If moon radius 1600 km and g on its surface is 1.6 ms^-2Then the escape velocity on the moon is

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1600 ms^-1

50.6 ms^-1

50.8 ms^-1

2263 ms^-1

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