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What is the correct answer?

4

If the demand curve is vertical then its slope is:

A. Infinite

B. Zero

C. Equal to one

D. None of the

Correct Answer :

B. Zero


The slope of vertical demand curve is zero b/c here change in quantity demanded is zero and change in price is some positive value so dQ/dP = 0.It is also known as perfectly inelastic demand curve)

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