﻿ For what value of c the vector  will be perpendicular to:(i) Z-axis      (ii) Y-axis? from Physics Motion in A Plane Class 11 Manipur Board

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For what value of c the vector  will be perpendicular to:
(i) Z-axis      (ii) Y-axis?

(i) Vector  is perpendicular to Z-axis if its dot product with  is zero.

i.e.

The equation is satisfied for all values of c.

Therefore  is always perpendicular to Z-axis whatever the value of c.

(ii) Similarly

∴   is perpendicular to Y-axis if c = 0.

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