2. Statements given below are incorrect. Write correct statements.
(a) A person holding a briefcase in his hand and standing still does work.
(b) A bird flying high in sky possesses kinetic energy only.
(c)when electric current passes through a bulb it first changes into light and then heat energy.
(d)when a stone is dropped from a height its kinetic energy changes into potential energy.
(e) when the nucleus of an atom splits,the nuclear energy changes into chemical energy.
(f)when food is digested the chemical energy in it ,changes into muscular energy.
(g) the energy stored in a car battery,is in the form of electric energy.
(h) work is said to be done, when a force is applied on a body.
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Answer:
1133331 for a b c and d
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