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4

The motion .of the pendulum of a wall clock is an example of

A. linear motion

B. vibratory motion

C. rotational motion

D. None of the above

Correct Answer :

B. vibratory motion


Related Questions

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4

When a body is immersed in a fluid the force of buoyancy of the fluid on the body depends on

A. the immersed volume of the body

B. density of the liquid

C. acceleration due to the gravity at the place

D. All the above

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4

A star contains

A. about 75% of hydrogen

B. 22% helium

C. traces of most other elements including oxygen, neon, carbon and nitrogen

D. All the above

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4

The radius of an atom is approximately

A. 10-10 cm

B. 10-12 cm

C. 10-13 cm

D. 10-16 cm

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4

When a bullet is fired from a gun

A. the gun moves forward

B. the gun jumps up

C. the gun does not move

D. the gun recoils with the same momentum as the bullet

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4

If a body is taken from the earth to the moon

A. both its mass and weight will be different

B. its mass will be different but the weight will remain the same

C. its mass and weight will both remain unchanged

D. its mass will remain the same but weight will be different

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4

'Acoustics' is a branch or study dealing with

A. historical sites

B. architecture

C. sound

D. trigonometry

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4

A device used in a ship for the purpose of measuring the depth of the sea is

A. an altimeter

B. a fathometer

C. a hydrometer

D. a sonometer

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4

Which physical quantity is measured in watts

A. power

B. kinetic energy

C. momentum

D. impulse

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4

The escape velocity of a satellite projected from the surface of the earth is independent of

A. the mass of earth

B. the mass of the satellite

C. the radius of the earth

D. gravitation of the earth

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4

If a band is played on the moon the sound will

A. reverberate

B. be heard by us faintly

C. be heard upto 10 km from it

D. not be heard at any distance at all from it

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4

The Indian Satellite System used for domestic communications, television and meteorology is known as

A. INSAT

B. Bhaskara

C. Aryabhatta

D. All the above

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4

The maximum displacement of the particle in a mechanical wave motion is known as

A. amplitude

B. vibration

C. frequency

D. phase

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4

When are temperature resistance

A. increases

B. decreases

C. remains the same

D. first increases then decreases

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4

While crossing a suspension bridge, the soldiers are ordered to break steps because

A. the marching in steps will involve a big strain on them

B. the resonant vibrations caused by their marching can damage the bridge increasing the amplitude to dangerous proportions

C. the marching may obstruct other traffic

D. rumblings of their marching may disturb the surroundings

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4

The velocity required to place a vehicle in orbit round the moon is _________ that required to place it in orbit round the earth.

A. less than

B. greater than

C. equal to

D. greater than or equal to

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4

In a refrigerator cooling is produced by

A. the ice that deposits on the freezer

B. the evaporation of a volatile liquid

C. None of the above

D. Both (a) and (b)

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4

The planet with the reddish tinge is

A. Jupiter

B. Mars

C. Mercury

D. Saturn

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4

The mode of travel of heat energy from the sun across the empty space beyond the earth's atmosphere is known as

A. conduction

B. convection

C. radiation

D. absorption

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4

Alternating Current (AC) is more advantageous than direct current because

A. it can be transmitted easily and efficiently

B. Alternating Current (AC) loses the least amount of energy when transmitted at high voltages

C. Alternating Current (AC) voltage can be easily increased or decreased

D. all the above

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4

Primary colours are

A. colours of the rainbow

B. colours in the spectrum of white light

C. colours which cannot be produced by mixing other colours

D. colours found in nature

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4

It is easier to climb down a staircase than climb up because in climbing down

A. work is done against gravity

B. the steepness of the staircase isn't felt

C. gravity assists

D. there is no friction between the legs and steps

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4

The method used to separate aluminium from a alumina is

A. electroplating

B. electrotyping

C. electrolysis

D. distillation

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4

Air pressure is usually highest when the air is

A. warm and moist

B. cool and dry

C. warm and dry

D. cool and moist

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4

Metals are good conductors of heat because

A. they contain free electrons

B. their atoms are relatively far apart

C. their atoms collide frequently

D. they have reflecting surfaces

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4

Pyrometers are instruments used

A. for measuring the velocity of wind

B. in the manufacture of fireworks

C. in finding the coefficient of apparent expansion of a liquid

D. for measuring high temperatures

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4

When water is cooled from 4�C to 2�C its density

A. increases

B. decreases

C. remains the same

D. first increases then decreases

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4

The planet that has got a well-developed set of rings is

A. Venus

B. Saturn

C. Mercury

D. Earth

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4

We see the flash of lightning before hearing the thunder because

A. light travels very much faster than sound

B. sound travels faster than light

C. lightning occurs nearer than thunder

D. both travel at the same speed

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4

Warm air will hold more water vapour than cold air because

A. it is lighter

B. it has more water vapour in it

C. its molecules are close together

D. its molecules are far apart

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4

A bullet is fired at a certain angle with the horizontal. Its path will be

A. elliptical

B. a straight line

C. a parabola

D. a vertical line