A book is kept on the surface of a table. If the gravitational pull of the earth on the book is the force of action, then the force of reaction is exerted by

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Q: 63 (NDA-II/2009)
A book is kept on the surface of a table. If the gravitational pull of the earth on the book is the force of action, then the force of reaction is exerted by

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,9,23,14,6,9,3

keywords: 

{'gravitational pull': [0, 0, 2, 1], 'force': [0, 0, 0, 2], 'table': [0, 0, 1, 0], 'book': [4, 0, 22, 27], 'earth': [0, 1, 1, 1], 'reaction': [1, 0, 5, 18], 'surface': [1, 0, 0, 0], 'action': [1, 0, 4, 13]}

The force of action refers to the gravitational pull of the Earth on the book. According to Newton`s third law of motion, for every action, there is an equal and opposite reaction. In this case, the force of reaction is exerted by the book on the table.

Option 1: The book on the table - This is the correct answer. As mentioned before, the force of reaction is exerted by the book on the table.

Option 2: The book on the Earth - This is not the correct answer. While the book exerts a force on the Earth, in this scenario, we are specifically focusing on the force of reaction exerted by the book.

Option 3: The table on the book - This is the correct answer. The force of reaction is exerted by the table on the book, as the book rests on the surface of the table.

Option 4: The table on the Earth - This is not the correct answer. The question specifically asks about the force of reaction exerted by the book, not the table on the Earth.

Therefore, the correct answer is option 3, the table on the book.

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