Measurement 2024

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The diagram shows part of a vernier scale. What is the correct reading?

• 42.5 mm

• 38.0 mm

• 33.5 mm

• 30.5 mm

What is the reading as shown in the figure below ?

• 9.48 mm

• 9.48 cm

• 9.98 cm

• 9.98 mm

In an experiment, the length and breadth of a rectangular card was found to be (64 ± 2) mm and (47 ± 1) mm respectively. The uncertainty in the area cannot be more than ….

• 90 mm²

• 120 mm²

• 150 mm²

• 180 mm²