Question

Which of the following are invalid identifier names and why?
a. -PaidIntrest b. s-numc. per cent d. Dit km e. 123 f. class
g. while h. Roll.No

Answer 1

Answer:

Distance is a scalar quantity whereas displacement is a vector quantity. Distance is the total path covered by the body and displacement is the shortest path covered by the body. The distance can never be zero but displacement can be.

Answer 2

Answer:

2

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