A bug starts at the center of a 12 inch photograph record and crawls along a straight radial line to the edge . While this is happening the record turn ….

Q: A bug starts at the center of a 12 inch photograph record and crawls along a straight radial line to the edge . While this is happening the record turn through an angle of 45° . Describe the magnitude and direction of the bug’s displacement .

(a) 6 inch at an angle 45° from initial line .

(b) 12 inch at an angle 45° from initial line

(c) 6 inch at an angle 135° from initial line

(d) 12 inch at an angle 135° from initial line

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Ans: (b)
Sol: Displacement = Radius of Record = 12 inch

As Record turns through an angle of 45° . Hence direction of bug’s displacement is 45° from initial line