True or false: modern physics

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Below the threshold frequency no electrons are emitted, however bright the light.

2. Statement is true

   Yes

   Statement

   The work function depends on the properties of the metal.

3. Statement is true

   Yes

   Statement

   Photoelectric emission was discovered in 1887.

4. Statement is true

   No

   Statement

   The work function is the same for every metal.

Instructions

Decide whether each statement is true or false.

Explanation