Q:

A wooden block of mass m1 kg accelerates at m/s when a force of 5 N acts on it. Another block of mass m2 kg accelerates at 20 m/s when the same force acts on it. If both the blocks are tied together and the same force acts on their combination, the acceleration will be about

A) 6.67 m/s2	B) 1.67 m/s2
C) 5.67 m/s2	D) 4.67 m/s2

Answer & Explanation Answer: A) 6.67 m/s2

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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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

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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

Explanation:

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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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Q:

Name the first country to launch world's first 6G satellite named 'UESTC' satellite (Star Era - 12) with an aim to test communications from space?

A) United States	B) Japan
C) China	D) Russia

Answer & Explanation Answer: C) China

Explanation:

China has launched world's first 6G satellite named 'UESTC' satellite with an aim to test communications from space.

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Q:

Which of the following instrument is used to measure Soil Water Tension?

A) Photometer	B) Pyrometer
C) Psychrometer	D) Tensiometer

Answer & Explanation Answer: D) Tensiometer

Explanation:

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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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