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Q.

Which of the following objects will make the glow when put in position A of the material tester shown here.

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a

Comb

b

Iron nail

c

Matchstick

d

Book

answer is B.

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Detailed Solution

Comb, matchstick, and book does not conduct electricity whereas iron nail is a good conductor of electricity hence it will make the bulb glow.

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Which of the following objects will make the glow when put in position A of the material tester shown here.