MCQ
Which of the following is a correct relation
- A(a) ${ }_a \mu_r={ }_a \mu_w \times{ }_r \mu_\omega$
- B(b) ${ }_a \mu_r \times{ }_r \mu_w={ }_w \mu_a$
- C(c) ${ }_a \mu_r \times{ }_r \mu_a=0$
- ✓(d) ${ }_a \mu_r /{ }_w \mu_r={ }_a \mu_w$
✓
Answer
Correct option: D.
(d) ${ }_a \mu_r /{ }_w \mu_r={ }_a \mu_w$
(d) $\frac{{ }_a \mu_r}{{ }_w \mu_r}=\frac{\mu_r / \mu_a}{\mu_r / \mu_w}=\frac{\mu_w}{\mu_a}={ }_a \mu_w$
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