A wheatstone bridge is used to determine the value of unknown resistance X by adjusting the variable resistance Y as shown in the figure. For the most precise measurement of X, the resistances P and Q

1. A. Should be approximately equal and are small
2. B. Should be very large and unequal
3. C. Do not play any significant role
4. D. Should be approximately equal to 2X

Attempt this NEET 2022 Physics question free — pick an option to reveal the correct answer and a step-by-step explanation. Then join NEET Mastery Quest to practise 15,000+ PYQ and 2027-syllabus questions.