The tension in a sonometer wire is found to be 90 N if the distance between the bridges is 30 cm. If the distance is reduced to 10 cm, the tension in the wire will be:
A
30 N
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B
9 N
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C
90 N
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D
10 N
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Solution
The correct option is C 90 N The tension in the wire does not depend on the distance between the bridges and hence it remains constant The correct option is (c)