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A horizontal cylinder has two sections o...

A horizontal cylinder has two sections of unequal cross-section, in which two pistons can move freely. The pistons are joined by a string. Some gas is trapped between the pistons . Spring is massless and in natural length. If this gas is heated, the spring will .

A

Compress

B

Elongate

C

Remain at natural length

D

Either (1) or (2) depending on initial pressure

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