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Physics quiz 15

Physics quiz 15

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Quiz Questions And Answers

We receive sunlight on earth surface. What type of light beams are these?

Diverging
Random
Parallel
Converging

'Shock-absorbers' are usually made of steel as it:

is not brittle
has lower elasticity
has higher elasticity
has no ductile property

The atmospheric air is held to the Earth by:

gravity
winds
clouds
rotation of the Earth

The function of ball bearings in a wheel is:

to increase friction
to convert kinetic friction into rolling friction
to convert static friction into kinetic friction
just for convenience

The function of ball bearings in a wheel is:

to increase friction
to convert kinetic friction into rolling friction
to convert static friction into kinetic friction
just for convenience

Lambert's law is related to:

Reflection
Refraction
Interference
Illumination

A geostationary satellite revolves around the Earth from:

East to West
West to East
North to South
South to North

Among the following materials sound travels fastest in:

steel
air
vacuum
water

Which phenomenon do bats or dolphins use to find prey, predators or obstacles?

Refraction of sound
Formation of beats
Scattering of sound
Echo location

What did the first electronic digital computer contain?

Transistors
Valves
Core memory
Semiconductor memory
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