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Q:

Which of the following is false with reference to a photo-voltaic cell?

A) It is another name as solar cell B) It can be used as infra-red detectors
C) It can store light energy in the form of electrical energy D) It converts electric energy into light energy
 
Answer & Explanation Answer: D) It converts electric energy into light energy

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Q:

Creating realistic sounds in animation is called

A) Geisler B) Foley
C) Doppler D) Echoe
 
Answer & Explanation Answer: B) Foley

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Q:

HEPA filters are used to remove microbes from

A) human tissues B) air
C) medical instruments D) liquids
 
Answer & Explanation Answer: B) air

Explanation:

High-efficiency particulate air (HEPA), also known as high-efficiency particulate absorbing and high-efficiency particulate arrestance, is an efficiency standard of air filter.

hepa-filters1596516018.png image

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Q:

If a body takes 't' seconds to go once round the circular path of radius 'r', the velocity 'v' is given by

A) v=t2πr B) v=2πrt
C) v=2πr2t D) v=πr2t
 
Answer & Explanation Answer: B) v=2πrt

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Q:

An object, starting from rest, moves with constant acceleration of 4 m/s2. After 8 s, its speed is

A) 16 m/s B) 8 m/s
C) 32 m/s D) 4 m/s
 
Answer & Explanation Answer: C) 32 m/s

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Q:

Which planet is known as red planet?

A) Mercury B) Pluto
C) Mars D) Venus
 
Answer & Explanation Answer: C) Mars

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Q:

Mangifera indica is the scientific name of

A) Guava B) Mango
C) Amla D) Jack fruit
 
Answer & Explanation Answer: B) Mango

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Q:

The large collection of stars, dust and gas held together by gravitational attraction between components is known as

A) Cluster B) Atmosphere
C) Galaxy D) Sun Family
 
Answer & Explanation Answer: C) Galaxy

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