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Q.

The maximum and minimum magnitude of the resultant of two vectors are 17 units and 7 units respectively. Then the magnitude of resultant of the vectors when they act perpendicular to each other is:

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a

13

b

14

c

18

d

16

answer is D.

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Detailed Solution

Question Image

Rmax=17                                          

Rmin=7

R¯=a¯+b¯

Rmax=a+b

Rmin=a−b

a=12,  b=5

when θ=90, R=13

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