KCET 2025 | Units & Measurement and Dimensions Question 2 | Physics

The true length of a wire is $$3.678 \mathrm{~cm}$$. When the length of this wire is measured using instrument $$A$$, the length of the wire is $$3.5 \mathrm{~cm}$$. When the length of the wire is measured using instrument $$B$$, it is found to have length $$3.38 \mathrm{~cm}$$. Then, the

measurement with $$A$$ is more accurate and precise.

measurement with $$A$$ is more accurate while measurement with $$B$$ is more precise.

measurement with $$B$$ is more accurate and precise.

measurement with $$A$$ is more precise while measurement with $$B$$ is more constant.

KCET 2022

MCQ (Single Correct Answer)

-0

The Vernier scale of a travelling microscope has 50 divisions which coincides with 49 main scale divisions. If each main scale division is $$0.5 \mathrm{~mm}$$, then the least count of the microscope is

$$0.5 \mathrm{~mm}$$

$$0.01 \mathrm{~mm}$$

$$0.5 \mathrm{~cm}$$

$$0.01 \mathrm{~cm}$$

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