एक भौतिक राशि Q को \(\mathrm{X}^{-2} \mathrm{Y}^{+\frac{3}{2}} \mathrm{Z}^{-\frac{2}{5}}\) के रूप में सूत्रबद्ध किया गया है। X, Y और Z स्वतंत्र प्राचल हैं जिनकी माप में भिन्नात्मक त्रुटियाँ क्रमशः \(0.1,0.2\) और 0.5 हैं। Q की अधिकतम भिन्नात्मक त्रुटि कितनी होगी ?

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.