Question

A Vernier caliper has a least count of ________.
1. 0.1 cm
2. 0.001 cm
3. 1 cm
4. 0.01 cm

Answer 1

Correct Answer - Option 4 : 0.01 cm

CONCEPT:

• Least Count: The smallest value that an instrument can measure accurately is called least count.
  • All the readings or measured values are accurate only up to this value.

EXPLANATION:

• The smallest value that an instrument can measure accurately is called least count.
• This is the least value that can be measured by the instrument.
• The least count error is the error associated with the resolution of the instrument.
• The least count of a vernier caliper is 0.01 cm.
• The least count of a spherometer is 0.001 cm.
• So the correct answer is option 4.