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Table-tennis ball has a mass 10 g and a speed of 90 m/s. If speed can be measured within an accuracy of 4% what will be the uncertainty in speed and position?

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Vishal Baghel | Contributor-Level 10

4 months ago

This is a Short Answer Type Questions as classified in NCERT Exemplar

Ans: Given, m (mass) = 10g, v (speed) = 90 m/s and accuracy = 4%

Uncertainty in speed = $\frac{90 \times 4}{100} =$ 3.6 ms^-1

Uncertainty in position = h/4 πmΔv = 6.626 × 10^-34/4 × 3.14 × 10 × 3.6

=1.36 × 10^-33m

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Table-tennis ball has a mass 10 g and a speed of 90 m/s. If speed can be measured within an accuracy of 4% what will be the uncertainty in speed and position?

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