WBJEE 2021 Physics and Chemistry Solved Paper

PHYSICS

CATEGORY - I (Q1 to Q30)

Carry 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.

Question : 10 of 80

Marks: +1, -0

Centre of mass (C.M.) of three particles of masses 1 kg, 2 kg and 3 kg lies at the point (1, 2, 3) and C.M. of another system of particles of 3 kg and 2 kg lies at the point (–1, 3, –2). Where should we put a particle of mass 5 kg so that the C.M. of entire system lies at the C.M. of the first system ?

(3, 1, 8)
(0, 0, 0)
(1, 3, 2)
(–1, 2, 3)

Validate

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