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Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 13 - Fluid Mechanics > Assertion : A wooden plank is floating in two liquids as shown. Net force applied by liquid-1 on plank is zero. Reason : Contribution in upthrust due to liquid -1 is V1ρ1g. Where V1 = volume immersed in liquid -1 and ρ1 is the is the density of liquid -1.

Assertion : A wooden plank is floating in two liquids as shown. Net force applied by liquid-1 on plank is zero. Reason : Contribution in upthrust due to liquid -1 is V1ρ1g. Where V1 = volume immersed in liquid -1 and ρ1 is the is the density of liquid -1.

Assertion : When an ideal fluid flows through a pipe of non-uniform cross-section then pressure is more at that section where area is more if the pipe is horizontal. Reason : According to Bernoulli's theorem speed at broader cross-section will be less.