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Q:

Acceleration due to gravity on a planet decreases with ______.

A) decrease in radius of the planet B) increase in mass of the planet
C) decrease in mass of the body D) increase in altitude from surface of the planet
 
Answer & Explanation Answer: D) increase in altitude from surface of the planet

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Q:

The weight of a boy on the surface of the moon is 300 N. The weight of the same boy on the surface of the earth will be

A) 300 N B) 50 N
C) 1800 N D) 5 N
 
Answer & Explanation Answer: C) 1800 N

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Q:

The SI unit of acceleration is _______________.

A) meters per seconds squared B) meters per second
C) seconds per meter D) seconds per meter squared
 
Answer & Explanation Answer: A) meters per seconds squared

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Q:

Humidity is a measure of the _______________.

A) pressure in the air B) viscosity of the air
C) air resistance D) moisture in air
 
Answer & Explanation Answer: D) moisture in air

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Q:

When a ray of light travels from a denser medium to a rarer medium, it bends

A) towards the normal and speeds up B) towards the normal and slows down
C) away from the normal and speeds up D) away from the normal and slows down
 
Answer & Explanation Answer: C) away from the normal and speeds up

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Q:

The frequency of direct current is _____________

A) Zero B) 50 HZ
C) 60 HZ D) 100 HZ
 
Answer & Explanation Answer: A) Zero

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Q:

'Parsec' is the unit measurement of

A) Density of stars B) Astronomical distance
C) Brightness of heavenly bodies D) Orbital velocity of giant stars
 
Answer & Explanation Answer: B) Astronomical distance

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Q:

_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.

A) Acaulis B) Alatus
C) Albopictus D) Aurora
 
Answer & Explanation Answer: D) Aurora

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