Same chapter3 marksDifficulty: Medium
The length of a rod is measured as 3.50 cm and its breadth as 2.1 cm. Give the area to the correct number of significant figures.
Physical World and Measurement
2 marksDifficulty: Easy
Write the dimensional formula of force, work and power.
Original Khojo Papers practice question — not from a past board paper.
Answer
Force [M L T−2], work [M L2 T−2] and power [M L2 T−3].
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
Work is force times distance and power is work per unit time, so each dimension follows from the one before.
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