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Q:

Light travels slowest in

A) Glass B) Water
C) Air D) Vacuum
 
Answer & Explanation Answer: A) Glass

Explanation:

Because the refractive index of glass is highest, light travels slowly in Glass. 

We know that the speed of light depends on the refraction index. The higher the index of refraction is, the slower the speed of light is.


R.I of air and vacuum = 0 (air is a teeny bit more but can be taken as 0)
R.I of water = 1.33
R.I of glass = 1.4.

 

Hence, Light travels slowest in Glass.

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Filed Under: Physics
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7 7391
Q:

Who is the author of the book 'WE INDIANS'

A) Khushwant Singh B) Mulk Raj Anand
C) Nirad C. Chaudhary D) Subramanya Swamy
 
Answer & Explanation Answer: A) Khushwant Singh

Explanation:
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Filed Under: Books and Authors

12 7386
Q:

Which of the following does not contain the material particles

A) alpha - rays B) beta - rays
C) gamma - rays D) anode rays
 
Answer & Explanation Answer: C) gamma - rays

Explanation:
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Filed Under: Chemistry

16 7379
Q:

Syadvad is a doctrine of

A) Lokayatism B) Saivism
C) Jainism D) Vaishnavism
 
Answer & Explanation Answer: C) Jainism

Explanation:
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Filed Under: Indian History

7 7371
Q:

The Essar group of companies has been promoted by  _____

A) Ambanis B) Kanorias
C) Ruias D) Goenkas
 
Answer & Explanation Answer: C) Ruias

Explanation:
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Filed Under: General Awareness
Exam Prep: Bank Exams , CAT

18 7365
Q:

For purifying drinking water alum is used

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

In purifying drinking water alum is used for coagulation of mud particles.

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Subject: General Science
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7 7364
Q:

Which of the following is the Trophy / Cups associated with the game of Hockey?

A) Derby B) Agha Khan Cup
C) Merdeka D) Vizzy Trophy
 
Answer & Explanation Answer: B) Agha Khan Cup

Explanation:
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Filed Under: Sports

22 7364
Q:

Quality of transmission depends upon

A) Nature of signal only B) Nature of medium only
C) Both (A) and (B) D) Neither A nor B
 
Answer & Explanation Answer: C) Both (A) and (B)

Explanation:

Quality of transmission is governed both by nature of signal and nature of communication channel/medium.

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Filed Under: Physics
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