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Q.

In each of the following expressions A, B and C represent lengths:I. A+ B   ll. AB III. ABCIV. A(B +C)Which of the following statements are correct ?(i) Two of them have dimensions of length.(ii) One of them has dimensions of area.(iii) One of them has dimensions of volume.(iv) None of them has dimensions of volume.

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a

(i, ii)

b

(i, ii, iv)

c

(ii, iii)

d

(iii, iv)

answer is B.

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Detailed Solution

A+B has dim of lengthAB has dim of area.ABC has dim of length.AB+C is dimensionless.
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