Class 11

2. Vector question bank (Physics)

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Q1.

A man starts from O moves 500 m turns by 60º and moves 500 m again turns by 60º and moves 500 m and so on. Find the displacement after (i) 5ᵗʰ turn, (ii) 3ʳᵈ turn

(A)

500 m, 1000 m

(B)

500 m, 500√3 m

(C)

1000 m, 500√3 m

(D)

None of these

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Q2.

A river flows 3 kmhâ»Â¹ and a man is capable of swimming 2 km hâ»Â¹. He wishes to cross it in minimum time. In which direction will he swim?

(A)

sinâ»Â¹(2/3)

(B)

cosâ»Â¹(2/3)

(C)

tanâ»Â¹(2/3)

(D)

cotâ»Â¹(2/3)

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