JEE PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Medium

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Analyzing +4 | -1

\mathbf{A}

: An iron needle placed carefully on the surface of water may float, whereas a solid ball of same material will always sink

\mathbf{R}

: The buoyancy on an object depends both on the material and shape of object.

View answer and explanation

Correct option: C

(A) is true, (R) is false

Assertion A is true due to surface tension, but Reason R is false because buoyancy depends on the volume of the object and the density of the fluid, not the material of the object itself.

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