Q:

Indian Space Research Organisation (ISRO) and Jet Propulsion Laboratory (JPL) of NASA are working on world’s most expensive earth-imaging satellite to use dual frequency. Its name is ______

A) Cartosat	B) NISAR
C) APM	D) NIJAR

Answer & Explanation Answer: B) NISAR

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Q:

In 2015, underground glaciers of frozen water were discovered on

A) Mars	B) Venus
C) Jupiter	D) Saturn

Answer & Explanation Answer: A) Mars

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Q:

Living things constitute the biotic component of the ___________________.

A) mesosphere	B) biosphere
C) thermosphere	D) heliosphere

Answer & Explanation Answer: B) biosphere

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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:

Which of the following city is NOT situated on the banks of any river

A) Surat	B) Cuttack
C) Bhopal	D) Mysore

Answer & Explanation Answer: C) Bhopal

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Q:

What was United Kingdom's rank in 2016 Human Development Index published by the United Nations Development Programme?

A) 4	B) 16
C) 64	D) 256

Answer & Explanation Answer: B) 16

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Q:

In August 2017, Indian Government has launched a portal to provide a platform to sell agricultural produce called ‘e-RAKAM’. What does ‘M’ stand for?

A) Market	B) Mandi
C) Management	D) Messaging

Answer & Explanation Answer: B) Mandi

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Q:

The number of parliamentary seats (Lok Sabha) of Goa is _________.

A) 2	B) 13
C) 20	D) 25

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