A body of volume 100 cm³ and density 0.8 g/cm³ floats in water. Volume submerged is MCQ with Answer and Explanation

A body of volume 100 cm³ and density 0.8 g/cm³ floats in water. Volume submerged is
A. 100 cm³
B. 50 cm³
C. 20 cm³
D. 80 cm³
Answer: Option D
Solution (By JKSSB Mock Tests)
Weight = buoyancy => ρ_obj V_total g = ρ_water V_sub g => 0.8×100 = 1×V_sub => V_sub = 80 cm³.

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The core of a transformer is laminated to reduce
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B. Hysteresis loss
C. Eddy current loss
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Correct Answer: Option C


Explanation:
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This question belongs to: Science Physics
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Correct Answer: Option D


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Question #3
A body floats in a liquid with one-third of its volume above the surface. The density of the body relative to the liquid is:
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Correct Answer: Option D


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This question belongs to: Science Physics