Questions

Q:

A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:

A) 150 J B) 100 J
C) 50 J D) 75 J
 
Answer & Explanation Answer: A) 150 J

Explanation:
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Q:

Sound waves cannot travel through

A) Gas B) Liquid
C) Vacuum D) Solid
 
Answer & Explanation Answer: C) Vacuum

Explanation:

Sound waves cannot travel through a Vacuum.

 

A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.

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Q:

The coil wire in the electric room heater or electric cooking heater is called __________.

A) Circuit B) Element
C) Filament D) Cells
 
Answer & Explanation Answer: B) Element

Explanation:
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Q:

Due to an acceleration of 1  m/s2, the velocity of a body increases from 5 m/s to 10 m/s in a certain period. Find the displacement (in m) of the body in  that period.

 

A) 125 B) 37.5
C) 62.5 D) 75
 
Answer & Explanation Answer: B) 37.5

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Q:

Where did Harappan civilization develop?

Answer

Harappan or Indus Valley Civilization was the first and ancient civilization which started in what now Pakistan and North West India.


The Harappan civilization existed between 3300 BC and 1300 BC.


Indus_valley_civilization1533212661.jpg image


The ruins of Mohenjo-daro is a major archaeological site that was built by this civilization and is now a UNESCO World Heritage Site.


 

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Q:

Who attended all the three-round table conferences?

A) M K Gandhi B) M M Malviya
C) B R Ambedkar D) Annie Besant
 
Answer & Explanation Answer: C) B R Ambedkar

Explanation:

Dr. B. R. Ambedkar attended all the three-round table conferences.

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Q:

Consider the electromagnetic radiations having wavelengths 200 nm, 500 nm and 1000 nm. Which wavelength (s) of the following can make visual sensation to a human eye?

A) 200 nm and 500 nm B) 500 nm and 1000 nm
C) 500 nm only D) 200 nm and 1000 nm
 
Answer & Explanation Answer: C) 500 nm only

Explanation:
Visual image of human eye is 390-700 nanometer. So, approximate value is 500 nanometer only.
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Q:

What happens the first time buck is beaten?

A) He swears that he'll someday have his revenge on Spitz. B) He learns that he can't get away with stealing another dog's food.
C) He learns he has to obey men, but decides never to surrender inside. D) He has his spirit as well as his body crushed.
 
Answer & Explanation Answer: C) He learns he has to obey men, but decides never to surrender inside.

Explanation:
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