What Wavelength of Light Is Required to Cause the Ejection

question 142

Multiple Choice

What wavelength of light is required to cause the ejection of photoelectrons with kinetic energies of 5.0 J from a calcium surface (  4.60 J) ?

• A)485 nm
• B)390 nm
• C)308 nm
• D)632 nm
• E)480 nm

---

Definitions:

Defamatory Communication

It refers to the act of making false statements about someone that harm their reputation.

Libel

Written defamation that unjustly harms someone's reputation.

Battery

An intentional and unlawful physical act that results in contact with another person without their consent.

Physical Injury

Harm or damage to the body resulting from an external force, potentially causing pain, disability or death.