Question # 1

When the projectile reaches the highest point of trajectory, the vertical component of velocity becomes.

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Small

Zero

Maximum

Vi cos

A body covers a distance of 10 m in 1 sec with a constant velocity of 10 ms-1 , Acceleration produced by the body is.

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0 ms-1

2 ms-2

5 ms-2

10 ms-2

The mathematical expression for the restoring force is.

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F = kx

F = ma

F = dp/dt

F = -kx

The value of of 'g' at the centre of the earth is

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Infinite

2 g

3 g

zero

the louder the sound, the greater will be its.

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Speed

Frequency

Amplitude

Wave length

If the stream lines of fluid are forced closer together then.

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Speed of the fluid increases

Speed of the fluid decreases

Pressure of the fluid increases

Speed of the fluid remain same

the wavelength of transverse wave travelling with a speed 'v' having frequency 'f' in equal to

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f/v

Vf

V/f

f/V2

The distance covered by wave in 1 sec is

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wavelength

Wave number

Wave speed

Frequency

First law of thermodynamics can be defined by the equation

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Mercury is used as a thermometric substance because

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It is opaque

Does not stick to glass

Has low specific heat

All of these

Air blows from

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High pressure to low pressure

Low pressure to high pressure

Low temperature to high temperature

High temperature to low temperature

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

The portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

The focal length of convex lens

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Negative

Positive

small

Large

The increase in thermal pollution of environment means.

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Increase in the entropy

Decrease in the entropy

Entropy remains constant

Entropy becomes zero

A swing is good example of

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Resonance

Vibration

Time period

Oscillation

Stars moving away from Earth show a

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Green shift

Blue shift

Red shift

Yellow shift

A direction of torque is

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Along the position vector r

Perpendicular to both r and f

Along the direction of force F

Opposite to the direction of r

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11th Class Part 1 Physics Test Online MCQs With Answers

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