Physics The threshold frequency is the frequency below which : Photo electric emission is not possible Photo current increases with voltage Photo current decreases with voltage Photo current is constant Photo electric emission is not possible Photo current increases with voltage Photo current decreases with voltage Photo current is constant ANSWER DOWNLOAD EXAMIANS APP
Physics Wollen clothes keep the body warm because Wool absorbs radiant heat from outer objects Wool increases the temperature of the body Wool is a bad conductor Wool rejects heat from the outer objects Wool absorbs radiant heat from outer objects Wool increases the temperature of the body Wool is a bad conductor Wool rejects heat from the outer objects ANSWER DOWNLOAD EXAMIANS APP
Physics A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat? Conduction, convection and radiation Convection and radiation only Conduction and radiation only Conduction and convection only Conduction, convection and radiation Convection and radiation only Conduction and radiation only Conduction and convection only ANSWER DOWNLOAD EXAMIANS APP
Physics The unit of energy in MKS system is Joule Volt Erg Ohm Joule Volt Erg Ohm ANSWER DOWNLOAD EXAMIANS APP
Physics Radiocarbon dating technique is used to estimate the age of fossils rocks monuments soil fossils rocks monuments soil ANSWER DOWNLOAD EXAMIANS APP
Physics If a copper wire is increased to double its length, its resistance will become Double Four times Half One–fourth Double Four times Half One–fourth ANSWER DOWNLOAD EXAMIANS APP