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Q:

The attenuation in optical fibre is mainly due to

A) Scattering B) Absorption
C) Both (a) and (b) D) Neither absorption nor scattering
 
Answer & Explanation Answer: A) Scattering

Explanation:

The reason for transmitting data over optical fibers, is because the speed of data transmission through optical wires are equal to the speed of light. The intense speed of data transfer speed, has lead to the use of optical fibers. The optical fiber uses the technology of transferring light beams, from one end to the other end of optical cables. The attenuation in optical fiber is due to Scattering. The reason why scattering is caused, due to the folding, in the wire.

 

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Filed Under: Physics
Exam Prep: Bank Exams , CAT

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Q:

If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is double that of earth and radius is same as that of earth is _________________.

A) 2g B) g
C) g/2 D) 4g
 
Answer & Explanation Answer: A) 2g

Explanation:
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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

ΔPQR is right angled at Q. If secP = 13/5, then what is the value of sinR ?

A) 5/13 B) 5/12
C) 13/5 D) 13/12
 
Answer & Explanation Answer: A) 5/13

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) 369 B) 257
C) 346 D) 628
 
Answer & Explanation Answer: C) 346

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

The sum of the digits of a 2­digit number is 17. If we add 9 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

A) 89 B) 98
C) 78 D) 87
 
Answer & Explanation Answer: A) 89

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

Nagarhole National Park is part of the ____________ Biosphere Reserve.

A) Aravalli B) Vindhya
C) Satpura D) Nilgiri
 
Answer & Explanation Answer: D) Nilgiri

Explanation:
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Filed Under: Indian Geography
Exam Prep: Bank Exams

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Q:

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

 

Leaf, Caterpillar, Frog, ?

 

A) Grasshopper B) Snake
C) Cow D) Deer
 
Answer & Explanation Answer: B) Snake

Explanation:
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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

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Q:

If 5x - ­5(3x ­- 2) < 4x -­ 1 < 2 + 2x, then x can take which of the following values?

A) 2 B) 1
C) -1 D) -2
 
Answer & Explanation Answer: B) 1

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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