A. 8 cm
B. 10 cm
C. 16 cm
D. 12 cm

Correct Answer:

Option B = 10 cm

Explanation

Generally, from Hares Experiment, density is inversely proportional to height
i.e h ∝1/d; → h1d1 = h2d2
∴ 8 x 10³ = h2 x 800
∴ h2 = 8 x 10³/800

= 10cm

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