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Q:

The gravitational force of attraction between two bodies is __________________ the product of their masses.

 

A) directly proportional to the square of B) inversely proportional to
C) inversely proportional to the square of   D) directly proportional to  
 
Answer & Explanation Answer: D) directly proportional to  

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Q:

Two particles with charges q1 and q2 are kept at a certain distance to exert force F on each other. If the distance is reduced to one-fifth, then the force between them is

A) F/25 B) 5F
C) F/5 D) 25F
 
Answer & Explanation Answer: D) 25F

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Q:

Two particles with charges q1 and q2 are kept at a certain distance to exert force F on each other. If the distance is reduced to one-fifth, then the force between them is

A) F/25 B) 5F
C) F/5 D) 25F
 
Answer & Explanation Answer: D) 25F

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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

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Q:

Which of the following statements is/are INCORRECT?

 

A. The value of G on the moon is equal to that on the earth.

B. 26.68 x 10-11 N is the force of gravitation between two point masses of 2 kg and 2kg kept 1 m apart.

C. Newton's law of gravitation is valid in the laboratory only.

D. Force is inversely proportional to the square of the distance between two bodies.

 

A) B, C and D B) C and D only
C) Only C D) Only A
 
Answer & Explanation Answer: C) Only C

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Q:

Read the statements and select a conclusion from the given alternatives.

 

Statement :

 

To cultivate interest in debate the school has made it compulsory from December, 2015 for each student to attend two debate classes per week and submit a weekly report on the debates discussed.

 

Conclusions :

 

I. Interest in debating can be created by force.

 

II. Some students eventually will develop interest in debating.

 

A) Only conclusion I follows B) Only conclusion II follows
C) Both I and II follow D) Neither I nor II follows
 
Answer & Explanation Answer: B) Only conclusion II follows

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Q:

The magnitude of the gravitational force will be equal to the _________.

 

A) product of mass and acceleration due to the gravitational force   B) ratio of mass and acceleration due to the gravitational force
C) ratio of acceleration due to the gravitational force and mass D) reciprocal of product of mass and acceleration due to the gravitational force  
 
Answer & Explanation Answer: A) product of mass and acceleration due to the gravitational force  

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Q:

Who has authored the book titled "Insomnia : Army Stories" featuring stories based on life in the armed forces?

A) Anuradha Roy B) Rachna Bisht Rawat 
C) S. Hareesh D) Chinmay Tumbe
 
Answer & Explanation Answer: B) Rachna Bisht Rawat 

Explanation:

Penguin Random house published Rachna Bisht Rawat's new book "Insomnia : Army Stories" featuring stories based on life in the armed forces.

 

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