Question # 1

Angular momentum

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Scalar

Axial vector

Polar vector

At 45° angle

The center of mass of a sphere lies at:

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The axis of the sphere

Circumference of sphere

Center of the sphere

None of them

If time period of a pendulum is doubled by increasing its length, then its frequency will

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Also be doubled

Become half

Become one fourth

Becomes four times

The maximum drag force on a falling sphere is 9.8 N, it weight is

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1 N

9.8 N

4.9 N

Cannot be calculated

In the theory of dimensional analysis, heat may be properly represented by:

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ML²T^-2

MT^-2

ML^-1T^-1

None of these

When the total displacement is divided by total time taken, we get:

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Velocity

Average speed

Average velocity

None of these

The distance covered by a body in unit time is called.

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Displacement

speed

Velocity

Both B and C

By CAT scans, we can detect the density difference of the order of:

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1%

20%

30%

50%

70%

A diode which can turn its current ON and OFF in nono seconds is called:

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LED

Photodiode

An ordinary diode.

Both (A) and (B)

Both (B) and (C)

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

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maximum

zero

half of the maximum value

one third of the maximum value

Conversion of chemical energy to electrical energy can be achieved by:

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Primary cell

Secondary cell

Both (A) and (B)

Photovoltaic cell

Solar cell

Acceleration of a body at any particular instant during its motion is known as

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average acceleration

uniform acceleration

instantaneous acceleration

all of them

When satellite is moving in a circle, it has an aceleration

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mV²/r

ωr/V

V²/r

ωV/r

The energy stored in a dam is

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Kinetic energy

Electrical energy

Potential energy

None of these

A body falls freely from rest.It covers as much distance in the last second of its motion as covered in the first three seconds.The body has fallen for a time of

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3 s

5 s

7 s

9 s

Which one of the following is an optically active substance?

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Quartz crystal

Calcite crystal

Sugar solution

All of these

If the acceleration due to gravity is 10 ms^-2 and the units of length and time are changed to kilometer and hour respectively,the numerical value of acceleration is

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360000

72000

36000

129600

The original source of Wind energy is

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Tides

Waves

Sun

Moon

Which one is numeric quantity?

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Strain

Plane Angle

Impulse

both A and B

The ballistic missiles are useful for

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Short ranges

Long ranges

Medium ranges

None of these

The body moving with uniform velocity may be

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in equilibrium

accelerating

changing in direction

changing in magnitude

Blood vessels under normal conditions are inflate

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Occasionally

Some times

All the times

None of these

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