Question # 1

The product of cross sectional area of a pipe and speed of fluid along the pipe is

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Zero

Maximum

Constant

Variable

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

Frequency range of hearing of cats is.

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20-20000 Hz

10- 10000 Hz

60-20000 Hz

60-70000 Hz

If the are of a circle equals its radius, then the angle subtended at the center will be

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1 degree

One rotation

One radian

Half rotation

The light energy travels in space as waves was firstly proposed by

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Maxwell

Young

Einsten

Hydrogen

In rotational motion the analogous of mass is

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Angular acceleration

Torque

Moment of inertia

Angular momentum

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

Efficiency of steam locomotive is.

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8%

10%

9%

7%

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

The process of confining the beam of light to vibrate in one plane is called.

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Interference

Diffraction

Polarization

Total internal refraction

The motion of a simple pendulum is the example of

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Vibratory motion

Rotatory motion

Periodic motion

Both a and c

The blue colour of sky is due to

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diffraction

Reflection

Polarization

Scattering

The resultant of two forces 3N and 4 N acting at right angle to each other is.

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5 N

6 N

1 N

7 N

The direction of vector in space is specified by

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1- angle

2- angle

3- angle

4 - angle

Opted unit to measure blood pressure is.

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N/m2

Pascal

mm of Hg

N.m2

The measure of hotness or coldness of a substance is.

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Temperature

Heat

Internal energy

Energy

If an object lies at focus point F in front of a converd lens, its image is formed at.

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2F

F

3F

Infinity

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