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Q:

Which one of the following statements is not correct?

A) The response of the ear to sound of increasing intensity is approximately logarithmic. B) The sensitivity of the human ear does not vary with the frequency of the sound.
C) When two or more waves traverse the same medium, the displacement of any element of the medium is the algebraic sum of the displacements due to each wave. D) Longitudinal waves can travel in all media-solids, liquids and gases.
 
Answer & Explanation Answer: B) The sensitivity of the human ear does not vary with the frequency of the sound.

Explanation:

The human ear can respond to minute pressure variations inthe air if they are in the audible frequency range, roughly 20 Hz -20 kHz. In fact, tests conducted show an increased sensitivity in the 3000 Hz range which is the optimal amplification frequency in the human ear. So, the sensitivity of the human ear varies with the frequency of the sound.

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Filed Under: Physics
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Q:

If an object moves in a purely rotatory motion, then each constituent particle of the body moves in a circle, the centre of which is located on a line is called _______.

A) the axis of rotation B) the line of rotation
C) the spinning rod D) the fixed line
 
Answer & Explanation Answer: A) the axis of rotation

Explanation:
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Q:

At the time of emergency in 1975, who was serving as the President of India?

A) Morarji Desai B) Fakhruddin Ali Ahmed
C) V P Singh D) Indira Gandhi
 
Answer & Explanation Answer: B) Fakhruddin Ali Ahmed

Explanation:
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Filed Under: Indian Politics
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Q:

____________ is the premier trade body of and the chamber of commerce of the IT-BPO industry in India.

A) NIC B) NASSCOM
C) Department of Information Technology D) State Bank of India
 
Answer & Explanation Answer: B) NASSCOM

Explanation:
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Q:

Allium Cepa is the scientific name of _____.

A) Carrot B) Tomato
C) Potato D) Onion
 
Answer & Explanation Answer: D) Onion

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Filed Under: General Science
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Q:

Notepad' is a text editor in which of the following operating systems?

A) Windows B) Google Chrome
C) Mozilla Firefox D) Macintosh
 
Answer & Explanation Answer: A) Windows

Explanation:
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Q:

Which e-commerce website has partnered with NationalHighways Authority of India (NHAI) to enable cashlesspayments at all national and city toll plazas?

A) Paytm B) Mobikwik
C) Freecharge D) Oxigen
 
Answer & Explanation Answer: A) Paytm

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Q:

The outer most layer of Sun is known as___________

A) Chromosphere B) Photosphere
C) Radioactive zone D) Corona
 
Answer & Explanation Answer: D) Corona

Explanation:
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