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A bar of cubical shape of side length L is confined in all direction between rigid supports. If bar is heated uniformly by TC,

A bar of cubical shape of side length L is confined in all direction between rigid supports. If bar is heated uniformly by TC, then the force exerted in any direction is (A) (C) EaTL 1-2 EQTL 1-2 (B) (D) EaT 1-2 EQTL2 1-2

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