Ratio of doing work or rate of transfer of energy is defined as ………………. 

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Ratio of doing work or rate of transfer of energy is defined as ………………. 

A) work 

B) power 

C) capacity 

D) impulse


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Salim Ahmed Kawsar

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Correct option is B) power

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21. The ratio between kinetic energy and the total energy of the electrons of hydrogen atom according to Bohr's model is (a) \( 2: 1 \) [Pb. PMT 2002] (c) \( 1:-1 \) (b) \( 1: 1 \) (d) \( 1: 2 \)

Kuch bhi

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While doing a project work on weights of students in the class-room Sekhar found mean of the class as 28 kg, median as 29.5 kg and mode as 27 kg.

C) 27.5, 28.5

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Which of the following indicates the transfer of energy from one organism to the other ?

(D) Food chain

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The transfer of energy from one trophic level to other trophic level

(D) 10 – 20 %

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Rate of doing work or rate of transfer of energy is 

Correct option is C) power

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If work has positive value, the body on which the work has been done would energy. 

Correct option is A) gain

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If work has negative value, the body on which the work has been done would ………………. energy. 

Correct option is B) lose

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The capacity of doing work by an object depends on ………………. and of the object which is doing work. 

A) position, state

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If a grasshopper is eaten by a frog, then the energy transfer will be from :

C) primary consumer to secondary consumer

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Power is defined as P) rate of doing work  Q) rate of transfer of energy 

Correct option is C) P and Q

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