DEFINITION PHYSICS SPM #1

State the definition of Kepler's Third Law

• A gravitational force acting on object

• All planets move in elliptical orbits with the sun the Sun at one focus

• The square of the orbital period of any planet is directly proportional to the cube of the radius of its orbit

• A line that connects a planet to the Sun sweeps out the equal areas in equal times

A quantity which can be obtained by combination of base quantities by multiplication, division or both is definition of .....

• Base quantity

• Derived quantity

• Scalar Quantity

• Vector quantity

Escape velocity is defined as ......

• Minimum velocity needed by object on surface of Earth to overcome gravitational force and escape to outer space

• Maximum velocity needed by object on surface of Earth to overcome gravitational force and escape to outer space

• rate of change of distance

• rate of change of displacement

Archimedes' Principle state that

• An object which only fully immersed in fluid will experience a buoyant force equal to the weight of fluid displaced

• An object which partially or fully immersed in fluid will experience a buoyant force equal to the weight of fluid displaced

• Force applied on an enclosed fluid is transmitted uniformly in all direction in the fluid

• Pressure applied on an enclosed fluid is transmitted uniformly in all direction in the fluid

Definition of thermionic emission

• the emission of protons from metal surface when a metal surface is illuminated by a beam of light at certain frequency

• the emission of electrons from metal surface when a metal surface is illuminated by a beam of light at certain frequency

• the emission of protons from a heated metal surface

• the emission of free electrons from a heated metal surface

Work function is ....

• minimum energy required for a photoelectron to be emitted from metal surface

• maximum energy required for a photoelectron to be emitted from metal surface

• minimum frequency required to produce photoelectric effect on a metal

• maximum frequency required to produce photoelectric effect on a metal