Questions

Q:

Calculate the frequency (in Hz) of a sound wave of wavelength 5 m travelling with a speed of 360 m/s.

A) 1800 B) 36
C) 900 D) 72
 
Answer & Explanation Answer: D) 72

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Q:

Due to an acceleration of 4 m/s2 the velocity of a body increases from 10 m/s to 30 m/s in a certain period. Find the displacement (in m) of the body in that period.

A) 200 B) 250
C) 100 D) 125
 
Answer & Explanation Answer: C) 100

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Q:

Through which does light travel best?

A) water B) air
C) vacuum D) none
 
Answer & Explanation Answer: C) vacuum

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Q:

If the resistance of a conductor is reduced to half its initial value, then the heating effect in the conductor will become ___.

A) half B) double
C) one-fourth D) four-times
 
Answer & Explanation Answer: A) half

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Q:

The first Europeans to come to India were

A) British B) Dutch
C) French D) Portugese
 
Answer & Explanation Answer: D) Portugese

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Q:

World War II started in the year?

A) 1914 B) 1919
C) 1939 D) 1945
 
Answer & Explanation Answer: C) 1939

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Q:

Charles Darwin, the famous evolutionist, proposed his theory in which one of his books ?

A) The families of flowering plant B) The origin of species
C) The life on earth D) The story of the living world
 
Answer & Explanation Answer: B) The origin of species

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Q:

What was invented by Zacharias Jansen?

A) Jet Engine B) Radium
C) Microscope D) Electric Lamp
 
Answer & Explanation Answer: C) Microscope

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