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Question

Two cars A and B moving on two straight horizontal tracks inclined at an angle of 60o are heading towards the crossing. Initially their positions are as shown in figure. Both cars have same speed. Minimum separation between them during the motion will be.
1122320_682298579c9f44b496154407207201d5.png

A
10 km
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B
53 km
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C
5 km
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D
203 km
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Solution

The correct option is B 53 km
ACD is equilateral Δ
CD=40km
=BC=10km
DCA=600
d=10sin600
=10×32=53km
d=53km
hence,
option (B) is correct answer.

1229362_1122320_ans_d9ded2575aca48f7a301e8ab585dd41e.png

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