1. What is the process by which a target nucleus can be split into two smaller nuclei upon bombardment?

a. nuclear fusion

b. nuclear fission

c. neutron capture

d. photoelectric effect

2. When a radioactive nucleus undergoes decay, its new mass number is

a. always less than the original mass number.

b. always more that the original mass number.

c. always equal to the original mass number.

d. never less than the original mass number.

3. Which of the following cannot be polarized?

a sunlight

b. laser light

c. radio waves

d. sound waves