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Q:

In total internal reflection, the light travel from

A) rarer to denser medium and it occurs with no loss of intensity B) denser to rarer medium and it occurs with no loss of intensity
C) rarer to denser medium and it occurs with loss of intensity D) denser to rarer medium and it occurs with loss of intensity
 
Answer & Explanation Answer: B) denser to rarer medium and it occurs with no loss of intensity

Explanation:

According to wave theories, for Total internal reflection tohappen: Light must travel from denser medium to rarer medium. Angle of incidence should be greater than critical angle. As in case of TIR, the image is perfectly clear, it implies that there has been no loss of intensity.

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Filed Under: Physics
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Q:

Evidence suggests that life on Earth has existed for about_________________.

A) 3.5 million years B) 35 million years
C) 3.5 billion years D) 35 billion years
 
Answer & Explanation Answer: C) 3.5 billion years

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Filed Under: General Science
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Q:

What is the accepted average Calorie requirement for rural area in India?

A) 2100 B) 2200
C) 2300 D) 2400
 
Answer & Explanation Answer: D) 2400

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Filed Under: General Science
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Q:

Which disease is caused by Nickel?

A) Itai Itai B) Dermatitis
C) Learning disability D) Asthma
 
Answer & Explanation Answer: B) Dermatitis

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Filed Under: General Science
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Q:

The National Green Tribunal (NGT) in December 2016imposed a ban on the procurement, sale and use of glasspowder coated manja for flying kites. Who is the Chairmanof NGT?

A) Lokeshwar Singh Panta B) Jagdish Singh Khehar
C) Dinesh Saxena D) Jasmine Sharma
 
Answer & Explanation Answer:

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Filed Under: Indian Politics
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Q:

In the following question, out of the four alternatives, select the word similar in meaning to the word given.
Haste

A) Burden B) Expect
C) Hurry D) Sight
 
Answer & Explanation Answer: C) Hurry

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Filed Under: English
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Q:

In the following question, four words are given out of which one word is incorrectly spelt. Find the incorrectly spelt word.

A) Receeding B) Cemetery
C) Parallelogram D) Rehearsal
 
Answer & Explanation Answer: A) Receeding

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Filed Under: English
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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

To stop doing something; cease or abstain.

A) to endure B) to desist
C) to persevere D)  to dismay
 
Answer & Explanation Answer: B) to desist

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Filed Under: English
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