fossil
Carbon-14 dating is a way of determining the age of certain archeological artifacts of a biological origin up to about 50,000 years old. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities..Radio carbon dating is used to estimate the age of the fossils.
Angular momentum
It is only angular momentum which has both direction and magnitude.
combination of lens
In astronomical telescopes multiple lenses are connected with some desired angles so that everything can be seen from a particular distance.
this can damage the domestic wiring due to overloading
If you connects too much appliances in parellel circuit & switched on same time then maximum amount of current is drawn. Sockets w'll be over heated and produces sparking due to which wiring w'll be burn.
II, III
Diffusion is the phenomenal in which molecules of a particle move from the region of high concentration to low concentration until it is evenly distributed.