Verified Solution • 2025–26 Session moderate

QJEEM24Ph95a7: JEE Main 2024 Physics - Class 11 JEEM24Ph95a7 Solution: In a vernier calliper, when both jaws touch each other, zero of …

In a vernier calliper, when both jaws touch each other, zero of the vernier scale shifts towards left and its 4th  division coincides exactly with a certain division on main scale. If 50 vernier scale divisions equal to 49 main scale divisions and zero error in the instrument is 0.04 mm then how many main scale divisions are there in 1 cm ?

Multiple Choice Options

  • A 5
  • B 40
  • C 10
  • D 20

Step-by-Step Verified Solution

0.04=4( L. C.) ⇒ L.C =0.01 mm1MSD−4950MSD=0.01 mm⇒1MSD=50×0.01 mm=0.5 mm⇒1 cm=20(0.5 mm)

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