EduPadi logo
Home App Pricing
Classroom
Blog
👤My Account

Pass IELTS, JAMB, WAEC, & more with EduPadi CBT App

Practice questions, get instant scores, understand solutions with smart AI insights, and track your progress.

Explore EduPadi App…

Atomic Structure and Radioactivity - SS1 Physics Past Questions and Answers - page 4

31
Discuss the limitations of the Bohr Model and the development of Quantum Mechanics.
View related lesson
32
Radioactivity is the spontaneous emission of:
View related lesson
A

Electrons

 

B

Protons

 

C

Alpha particles

 

D
Neutrons
33
The process in which an unstable atomic nucleus emits an alpha particle is known as:
View related lesson
A

Alpha decay

 

B

Beta decay

 

C

Gamma decay

 

D
Nuclear fission
34
The half-life of a radioactive substance is defined as the time it takes for:
View related lesson
A

Half of the substance to decay

 

B

All of the substance to decay

 

 

C

One-fourth of the substance to decay

 

D
None of the above
35
Beta decay involves the emission of:
View related lesson
A

Protons

 

B

Electrons

 

C

Neutrons

 

 

D
Alpha particles
36
Gamma radiation is:
View related lesson
A

A stream of protons

 

B

A stream of electrons

 

 

C

High-energy electromagnetic radiation

 

D
The emission of alpha particles
37
The process in which a heavy nucleus splits into two smaller nuclei is called:
View related lesson
A

Alpha decay

 

 

B

Beta decay

 

C

Gamma decay

 

D
Nuclear fission
38
The decay of a radioactive substance follows a:
View related lesson
A

Linear pattern

 

 

B

Exponential pattern

 

C

Logarithmic pattern

 

D
Random pattern
39
Radioactive isotopes are used in:
View related lesson
A

Medical imaging

 

B

Power generation

 

C

Carbon dating

 

D
All of the above
40
The unit used to measure the amount of radioactivity is:
View related lesson
A

Watt

 

B

Coulomb

 

C

Becquerel

 

D
Ampere