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Physics - Unit & Dimension Question with Solution | TestHub

PhysicsUnit & DimensionMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A unit of area, often used in measuring land areas, is the hectare defined as $10^{4}$ $m^{2}$ . An open-pit coal mine consumes $75$ hectares of land, down to a depth of $26 m$ , each year. What volume of earth, in a cubic kilometre, is removed in this time?

Options:

Answer:

Solution:

Required volume $= \frac{75 \times 10^{4} \times 26}{10^{3} \times 10^{3} \times 10^{3}} {km}^{3}$ $= 0.02 {km}^{3}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Unit & DimensionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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