example principle of science

When a rectangular coil carrying current is placed in a magnetic field, a torque acts on the coil which rotates it continuously. When the coil rotates, the shaft attached to it also rotates and thus it is able to do mechanical wo..

The water flowing in a river is collected by constructing a high rise dam. This stored water is then allowed to fall from the top of the reservoir on to a water turbine located at the bottom of the dam. The fast moving water rotates the blades of the water turbine, which in turn rotates the armat..

When the blowing wind strikes across the blades of a windmill, it exerts a force on them due to which the blades of the windmill start rotating. This in turn rotates the shaft of the turbine and generates electricity. ..

Take a clean and dry beaker and find it's mass (m) using a physical balance. Now find the weight of a stone by suspending it from a spring balance. Fill an Eureka can (Eureka can is a beaker having a spout near the top) with water filled till the spout. Place the beaker of mass 'm' under the spout...

It is a matter of common experience that bodies appear lighter when immersed in water or any other liqui..

Question: Name any one device based upon the principle of reflection of light by plane mirrors. Answer: Periscope is a device based on the principle of reflection of ligh..

Processes Involved in Transport - There are some physical principles and biological processes that explain the transport of materials across the plant body. They are as follow..

An electromagnet can be defined as a soft-iron core that is magnetised temporarily by passing a current through a coil of wire wound on the core. Principle: It is based on the magnetic effect of electric curre..

Practical Applications of Reflection of Sound - Some applications of the principle of reflection of sound are: Megaphone Hearing Board Sound Board..

Question: What is the principle used in a pressure cooker? Answer: The pressure in the enclosed volume above the liquid reaches much greater values than atmospheric pressure, thus the temperature of boiling water within the cooker is greater than the normal boiling temperature...