When a rod is heated, its linear expansion depends on (a) initial length (b) area of cross section (c) mass (d) temperature rise
A
only (a) is correct
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B
(a) & (d) are correct
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C
(b) & (c) are correct
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D
(a) & (c) are correct
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Solution
The correct option is B (a) & (d) are correct Since linear expansion depends only on nature of material, initial length and temperature rise. Therefore option (B) is correct.