Questions

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:

The theory behind stars twinkling is that

A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time B) The intensity of light emitted by them changes with time
C) The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere D) The distance of the stars from the earth changes with time
 
Answer & Explanation Answer: A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time

Explanation:
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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

If cos 60° - sec 30° = x, then the value of x is

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

Explanation:
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Q:

The  Ryotwari  experiment  in  land  revenue was started by

A) Henry Dundas B) Alexander Reed
C) David Ricardo D) Mountstuart Elphinstone
 
Answer & Explanation Answer: B) Alexander Reed

Explanation:

The Ryotwari system was introduced by  Sir  Thomas  Munro and   Captain   Alexander   Read   in 1820.This system  was in operation for  nearly  30  years  and  had  many features  of  revenue  system  of  the Mughals,    Under    the    Ryotwari System  every  registered  holder  of land is recognised as its proprietor and pays direct to Government

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Filed Under: Indian History
Exam Prep: Bank Exams

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Q:

Mount Abu is a hill station located in _____ ranges.

A) Vindhya B) Satpuda
C) Aravalli D) Sahyadri
 
Answer & Explanation Answer: C) Aravalli

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

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Q:

Which one of the following is also regarded as Disguised unemployment?

A) Underemployment B) Frictional unemployment
C) Seasonal unemployment D) Cyclical unemployment
 
Answer & Explanation Answer: A) Underemployment

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

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Q:

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.

Some with natural _______________ would love to be in a scenic view and stare out of the window. Those nestlings could one day become a great biologist __________ a wildlife photographer or landscape artist to earn fame. Some always love to chit-chat with friends or family: encourage them so they have the ability to ___________. It is a gift ____________ verbal or linguistic creativity when they can tell stories, write essays, and converse easily with people. This __________ opportunities to them to bean orator, writer, poet, scholar or teacher.

great biologist __________ a wildlife photographer

A) nor B) but also
C) but D) or
 
Answer & Explanation Answer: D) or

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Filed Under: English
Exam Prep: Bank Exams

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Q:

In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option.

 

To understand the nature of electromagnetic radiation, it is imperative that we grasp the _______ nature of light.

A) twice B) dual
C) double D) dichotomous
 
Answer & Explanation Answer: B) dual

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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