On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because

Physics - General Knowledge Questions

mercury is a metal

density of mercury is greater than that of water

cohesion of mercury is greater than its adhesion with glass

cohesion of water is greater than its adhesion with glass

Correct Answer : cohesion of mercury is greater than its adhesion with glass

Published On : July 3, 2020

Recent Updates in Physics - General Knowledge Questions

Q .

The Hydraulic press used to lift a car is based on the following principle

Pascal's Principle

Magnus Effect

Bernoulli's Principle

Archimedes Principle

Correct Answer : Pascal's Principle

However, because Aâ‚ has 10 times the area of Aâ‚, it will produce a force (Fâ‚‚) that is 10 times greater than the original force (Fâ‚). Through Pascal's principle, a relatively small force exerted on a hydraulic press can be magnified to the point where it will lift a car.

Published On : June 12, 2021

Category : Physics

Q .

Superconductors are substances which

conduct electricity at low temperature

offer high resistance to the flow of current

offer no resistance to the flow of electricity

conduct electricity at high temperatures

Correct Answer : offer no resistance to the flow of electricity

Published On : July 3, 2020

Category : Physics

Q .