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 Physics Questions

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Q:

What is the SI unit of heat energy?

A) Joule B) Newton
C) Calorie D) Kelvin
 
Answer & Explanation Answer: A) Joule

Explanation:
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Q:

Granite is the examples of which rock ?

A) Igneous rock B) Sedimentary rock
C) Calcareous rock D) Matamorphic
 
Answer & Explanation Answer: A) Igneous rock

Explanation:

It forms slow crystallization of magma below Earth's surface.Granite is a hard light-colored igneous rock and it is composed mainly of quartz and feldspar with minor amounts of mica, amphiboles and other minerals it is mainly used for building and monuments

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Q:

An ideal gas cannot be

A) liquified B) solidified
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) liquified

Explanation:

An ideal gas cannot be liquified because forces between the molecules are negligible.

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Q:

The odometer guage indicates

A) the distance travelled by a vehicle B) the depth of the ocean
C) pitch length D) frequency of the wave
 
Answer & Explanation Answer: A) the distance travelled by a vehicle

Explanation:

The odometer or the odograph is an instrument used to indicate the distance travelled by the vehicle.

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Q:

We are able to walk on earth without slipping because of

A) Gravitational force B) Frictional force
C) Viscous force D) Centrifugal force
 
Answer & Explanation Answer: B) Frictional force

Explanation:
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Q:

An electric iron of 750 W is used for S hours per day. Then the energy consumed in one day by the iron is:

A) 6 units B) 600 units
C) 0.6 units D) 60 units
 
Answer & Explanation Answer: A) 6 units

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Q:

Which determines the frequency of a sound wave?

A) Amplitude B) Speed
C) Source D) Medium
 
Answer & Explanation Answer: A) Amplitude

Explanation:

The frequency of a sound wave is determined by the amplitude of the wave. As amplitude of the wave is high the frequency of the wave will also be high.

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Q:

Glass is made of which material?

A) Calcium carbonate B) Sand
C) Silver Iodide D) Lime
 
Answer & Explanation Answer: B) Sand

Explanation:

Glass is made from heating of sand. To melt sand to make glass, the temperature needed is above 1800 deg celcius.

glass_is_made_of_which_material1562221721.jpg image

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