Optical Phenomena And Properties Of Materials

Question 1

The Photoelectric effect

Answer 1

The process whereby electrons are ejected from a metal surface when light of a suitable frequency is incident on the surface

Question 2

Threshold Frequency

Answer 2

The minimum frequency of light needed to emit electrons from a certain metal surface

Question 3

Work Function

Answer 3

The minimum energy that an electron in the metal needs to be emitted from the metal surface

Question 4

Atomic Absorption

Answer 4

An atomic absorption spectrum is found when certain frequencies of electromagnetic radiation passing through a substance is absorbed

Question 5

Atomic emission

Answer 5

And atomic emissions spectrum is formed when certain frequencies of electromagnetic radiation are emitted due to an atom making a transition from a high energy state to a lower energy state

Question 6

Atomic emission

Answer 6

And atomic emissions spectrum is formed when certain frequencies of electromagnetic radiation are emitted due to an atom making a transition from a high energy state to a lower energy state