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1 dle V UULUU TUWUN 27. A water jet, who...

1 dle V UULUU TUWUN 27. A water jet, whose cross sectional are is 'a' strikes a wall making an angle '0' with the normal and rebounds elastically. The velocity of water of density d'is v. Force exerted on wall is :- (1) 2 av?d cose (3) 2 avd coso (2) 2 av'd sino (4) avd cos

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