Question # 1

If the object is at 5 cm from the lens of simple microscope than its magnifying power will be.

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5

10

15

25

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

Turning of radio is example of.

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Mechanical resonance

Electrical resonance

Physical resonance

Biological resonance

The speed of sound in ari at 0 ^oC is 332 ms-1, Then the speed at 40 ^oC will be

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372 ms-1

356 ms-1

346 ms-1

332 ms-1

Which of the following is evidence of wave nature of light

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Interference

Diffraction

Polarization

All of these

When ever the path difference between the waves is integral multiple of half the wavelength, interference will be

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Constructive

Destructive

(-)ve

(+) ve

The least distance of distinct vision for the normal eye is.

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15 cm

25 cm

125 cm

25 m

The light emitted from light emitting diode has wave length.

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1.1 micro meter

1.3 micro meter

1.5 micro meter

1.7 micro meter

Angular velocity determines, How fast or, How slow a body is

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Accelerating

Vibrating

Rotating

Oscillating

the velocity of sound is maximum at 20 ^oC in

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Lead

Copper

Glass

Iron

Angular frequency is the characteristic of

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Linear motion

Vibratory motion

Circular motion

All of these

According to first law of thermodynamics the quantity which is conserved.

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Force

Momentum

Energy

Power

The orbital angular momentum is associated with the motion of a body along

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Straight path

Circular path

Curved path

Along any path

The mechanism of transports energy of all the waves is

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Different

Same

Complicated

Easy

Parallel vectors of same magnitude will be

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Equal

Opposite

Both a and b

None of these

First law of thermodynamics can be defined by the equation

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The terminal velocity of a droplet falling down under gravity is directly proportional to the square of

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Its density

Its radius

Its viscosity

Its elasticity

The to and fro motion of a body is called

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Linear motion

Rotational motion

Vibratory motion

None of these

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