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Q.

A battery lights a bulb. The sequence of energy transfer in the process is
 


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a

Electrical Energy → Heat and Light energy

b

Chemical Energy → Electrical Energy → Heat and light energy

c

Chemical Energy → Heat and light energy

d

Chemical Energy → Light 

answer is B.

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Detailed Solution

A battery lights a bulb. The sequence of energy transfer in the process is Chemical Energy → Electrical Energy → Heat and light energy.
A battery stores energy in the form of chemical energy, it gets converted into electrical energy first and then into heat and light energy.
While lighting a bulb through a battery, the chemical energy of the battery gets converted into electric energy which further gets converted into light energy along with heat energy. Because of this, a bulb begins to heat up after being lit for a while. One form of energy can be transformed into another form but it cannot be created or destroyed.
Chemical energy→Electric energy→Light energy + Heat energy
 
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