Questions

Q:

Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.


The human eye is a complex part of the body that is used for seeing. Eyes enable people to perform daily tasks and to learn about the world that surrounds them. Sight, or vision, is a rapidly occurring process that involves continuous interaction between the eye, the nervous system, and the brain. When someone looks at an object, what he really sees is the light reflected from the object. This reflected light passes through the lens and falls on the retina of the eye. Here the light induces nerve impulses that travel through the optic nerve to the brain and then over other nerves to muscles and glands.


The eye is similar to a television camera. Both the eye and the television camera convert light energy to electrical energy. The eye converts light to nerve impulses that are interpreted by the brain as the sense perception called sight. A television camera converts light to electronic signals that are broadcast and transformed into light images in a television receiver. It is wonderful that human eyes blink an average of once every six seconds. This washes the eye with the salty secretion from the tear or lachrymal glands. Each tear gland is about the size and shape of an almond. These glands are situated behind the upper eyelid at the outer corner of the eye. After passing over the eye, the liquid from the gland is drained into the nose through the tear duct at the inner corner of the eye.

 

The eye is similar to the television camera because both

A) Convert light energy to mechanical energy. B) Convert light energy to electrical energy.
C) Convert energy to mechanical light D) Convert mechanical light to electrical energy.
 
Answer & Explanation Answer: B) Convert light energy to electrical energy.

Explanation:
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Q:

Choose  the  word  which  is  nearest in meaning to the given word ‘TRANSGRESSOR’

A) Passenger B) Law-breaker
C) Protector D) Comrade
 
Answer & Explanation Answer: B) Law-breaker

Explanation:

Transgressor means a person who is breaking the law.

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Q:

The colour of a thin film is due to

A) Scattering B) Dispersion
C) Diffraction D) Interference
 
Answer & Explanation Answer: D) Interference

Explanation:

In physics, interference is a phenomenon in which two waves superpose to form a resultant wave of greater, lower, or the same amplitude. The color bands in thin films are a result of wavelength dependent interference caused by the close spacing of the surfaces of the film.

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Filed Under: Physics
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Q:

ISRO successfully launches communication satellite on board of

A) GSLVMkIII B) GSLVMkII
C) GSLVMkI D) None of the above
 
Answer & Explanation Answer: A) GSLVMkIII

Explanation:
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Q:

Ocean between Africa and Australia?

A) Atlantic B) Pacific
C) Indian D) Arctic
 
Answer & Explanation Answer: C) Indian

Explanation:

Indian Ocean is between Africa and Australia and separates them.

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Q:

What is a binary semaphore?

Answer

A binary semaphore is one, which takes only 0 and 1 as values. They are used to implement mutual exclusion and synchronize concurrent processes.


 

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Q:

Who has won the Men's & Women's singles event at the 83rd Senior National Badminton Championships 2019?

A) Parupalli Kashyap & Saina Nehwal B) Sourabh Verma & Elise Merten
C) Sourabh Verma & Saina Nehwal D) Parupalli Kashyap & Elise Merten
 
Answer & Explanation Answer: C) Sourabh Verma & Saina Nehwal

Explanation:
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Q:

What is the value of (2/3 +tan45° ) ?

A) (1+√6)/√3 B) (2+√3)/√3
C) 4/√3 D) √3+2
 
Answer & Explanation Answer: B) (2+√3)/√3

Explanation:
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