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These questions consists of two statements each printed as Assertion and Reason. While answering these question you are required to choose any one of the following five reponses (a) If both Assertion and Reason arecorrect and Reason is the correct explanation of Asserrtion. (b) If both Assertion and Reason are correct but Reason is not the correct explanation of Assertion. (c ) If Assertion is true but Reason is false. (d) If Assertion is false but Reason is true. Assertion. Velocity of a block changes from `(2hati+3hatj) ms^(-1)` to `(-4hati-6hatj) ms^(-1)`. Then, work done by all the forces during this interval of time is positive. Reason Speed of block is increasing. |
Answer» Correct Answer - A (a) According to work-energy theorem, work done by all the forces =change in kinetic energy. |
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