Verified Solution • 2025–26 Session moderate

QJEEM20Ph2694: JEE Main 2020 Physics - Class 11 JEEM20Ph2694 Solution: For the four sets of three measured physical quantities as…

For the four sets of three measured physical quantities as given below. Which of the following options is correct ?
(i) A1 = 24.36, B1 = 0.0724, C1 = 256.2
(ii) A2 = 24.44, B2 = 16.082, C2 = 240.2
(iii) A3 = 25.2, B3 = 19.2812, C3 = 236.183
(iv) A4 = 25, B4 = 236.191, C4 = 19.5

Multiple Choice Options

  • A A1 + B1 + C1 = A2 + B2 + C2 = A3 + B3 + C3 = A4 + B4 + C4
  • B A4 + B4 + C4 << A1 + B1 + C1 << A3 + B3 + C3 << A2 + B2 + C2
  • C A4 + B4 + C4 << A1 + B1 + C1 = A2 + B2 + C2 = A3 + B3 + C3
  • D A4 + B4 + C4 >> A3 + B3 + C3 = A2 + B2 + C2 >> A1 + B1 + C1

Step-by-Step Verified Solution

A1 + B1 + C1 = 24.36 + 0.0724 + 256.2
= 280.6324 = 280.6 (After rounding off)

A2 + B2 + C2 = 24.44 + 16.082 + 240.2
= 280.722 = 280.7 (After rounding off)

A3 + B3 + C3 = 25.2 + 19.2812 + 236.183
= 280.6642 = 280.7 (After rounding off)

A4 + B4 + C4 = 25 + 236.191 + 19.5
= 280.691 = 281 (After rounding off)

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