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JEE Main & Advanced Physics Fluid Mechanics, Surface Tension & Viscosity / द्रव यांत्रिकी, भूतल तनाव और चिपचिपापन Question Bank Pascal's Law and Archimedes Principle

  • question_answer
    A metallic block of density 5 gm cm?3 and having dimensions 5 cm × 5 cm × 5 cm is weighed in water. Its apparent weight will be

    A)            5 × 5 × 5 × 5 gf                     

    B)            4 × 4 × 4 × 4 gf                      

    C)            5 × 4 × 4 × 4 gf                      

    D)            4 × 5 × 5 × 5 gf

    Correct Answer: D

    Solution :

                       Apparent weight                    \[=V(\rho -\sigma )g\]\[=l\times b\times h\times (5-1)\times g\]            \[=5\times 5\times 5\times 4\times g\] Dyne = \[4\times 5\times 5\times 5\] gf.


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