Question 11: When water falls from a tap, its cross-sectional area decreases as it comes down. Explain why? ANSWER When water emerges from the mouth…
Solved Short Questions of Fluid Dynamics This page consists of solved conceptual questions included in the Physics Course of First Year for all BISE Khyber…
Question 1: Smoke rises in a chimney faster when a breeze is blowing. Use Bernoulli’s Principle to explain this phenomenon. ANSWER Bernoulli’s Principle is Where…
Question 2: Why do many trailer trucks use wind deflectors on the top of their cabs? How do such devices reduce fuel consumption? ANSWER When…
Question 3: Consider the cross-section of the wing on an aero plane. The wing is designed such that the air travels faster over the top…
Question 4: When a fast moving train passes a man standing on the platform he is likely to be drawn toward the train. How does…
Question 5: If you suddenly turn on your shower water at full speed, why is the shower curtain pushed inward? ANSWER When the shower is…
Question 6: A baseball moves past an observer from left to right spinning counter clock-wise. In which direction it tends to deflect? ANSWER When the…
Question 7: A spherical body is dropped in two different fluids and the terminal velocity is found to be different. Give the reason. ANSWER We…
Question 8: A liquid passed through a pipe and it was found that the rate of influx is equal to the rate of efflux. What…