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Q:

Sun appears red in colour at sunrise and sunset due to

A) the fact that sun emits only red colour at that time B) red light having longer wave length scatters away
C) that sun comes out of the mountains D) that all other colours scatter away except red
 
Answer & Explanation Answer: D) that all other colours scatter away except red

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Filed Under: General Awareness

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Q:

The instrument used to determine the rotation speed of a shaft is called

A) Speedometer B) Tachometer
C) Anemometer D) Chronometer
 
Answer & Explanation Answer: B) Tachometer

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

A body of mass 3 kg accelerates from 10 m/s to 20 m/s in 5 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

 

A) 6 B) 18
C) 12 D) 36
 
Answer & Explanation Answer: A) 6

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Filed Under: Physics
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Q:

The radius of curvature of a concave mirror is 30 cm. Following Cartesian Sign Convention, its focal length is expressed as

A) -30 cm B) -15 cm
C) +30 cm D) +15 cm
 
Answer & Explanation Answer: B) -15 cm

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Q:

According to the categories of land mentioned in the Chola inscriptions ___________ was known as the land gifted to temples?

A) Vellanvagai B) Brahmadeya
C) Shalabhoga D) Devadana
 
Answer & Explanation Answer: D) Devadana

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Filed Under: Indian History
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Q:

Who invented bluetooth?

A) Kirkpatrick Macmillan B) Benjamin Franklin
C) Dr. Jaap Haartsen D) Charles Babbage
 
Answer & Explanation Answer: C) Dr. Jaap Haartsen

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Filed Under: Inventions
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Q:

Who Invented Electric Stove?

A) Lloyd Groff Copeman B) Bartolomeo Cristofori
C) Leonardo da Vinci D) Philip Diehl
 
Answer & Explanation Answer: A) Lloyd Groff Copeman

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Filed Under: Inventions
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Q:

Fixed cost per unit increases when

A) variable cost per unit decreases B) production volume decreases
C) variable cost per unit increases D) production volume increases
 
Answer & Explanation Answer: B) production volume decreases

Explanation:

Fixed cost per unit increases when production volume decreases. The fixed cost per unit does not always remain the same. Fixed cost per unit increases when production volume decreases and vice versa.

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Filed Under: Business Awareness
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