3 state hookes law Study guides, Class notes & Summaries

Solid Mechanics 2 Marks Question with Answers UNIT -1 1. Define stress. When an external force acts on a body, it undergoes deformation. At the same time the body resists deformation. The magnitude of the resisting force is numerically equal to the applied force. This internal resisting force per unit area is called stress. Stress = Force/Area 2. Define strain When a body is subjected to an external force, there is some change of dimension in the body. Numerically the strain ...

aqa a level physics paper 1 2023 What is meant by work function (2) - CORRECT ANSWER-Minimum energy required by an electron to escape from (1) a metal surface (1) What is meant by ionisation energy? (2) - CORRECT ANSWER-Minimum energy required to remove an electron from an atom (1) from the ground state (1) Why do emitted electrons have a kinetic energy that varies up to a maximum value? (4) - CORRECT ANSWER-Energy of a photon is fixed/constant (1) Energy is required for electrons to o...

What is meant by work function (2) - ANSWERSMinimum energy required by an electron to escape from (1) a metal surface (1) What is meant by ionisation energy? (2) - ANSWERSMinimum energy required to remove an electron from an atom (1) from the ground state (1) Why do emitted electrons have a kinetic energy that varies up to a maximum value? (4) - ANSWERSEnergy of a photon is fixed/constant (1) Energy is required for electrons to overcome work function ø (1) Electrons deeper into/below th...