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Physics /
Nuclear Physics /
2026 /
Quiz 1

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MDCAT Practice Test - Practice Test - Physics - Nuclear Physics - 2026 Quiz

Attempt 10 MCQs on MDCAT Practice Test - Practice Test - Physics - Nuclear Physics (Year 2026) | Quiz 1

1. What particles are found in the nucleus of an atom?

Protons and neutrons
Protons and electrons
Neutrons and electrons
Only protons

2. What does the atomic number represent?

Number of neutrons
Number of protons
Number of electrons
Mass number

3. What is the mass number?

Number of protons
Number of neutrons
Protons + neutrons
Protons + electrons

4. What are isotopes?

Same protons, different electrons
Same protons, different neutrons
Same neutrons, different protons
Same mass number

5. What is the nature of radioactive decay?

Spontaneous and random
Predictable and regular
Controlled by temperature
Controlled by pressure

6. What is half-life?

Time for all nuclei to decay
Time for half to decay
Average lifetime
Decay constant

7. What is the relation between decay constant and half-life?

λ = T₁/₂ / 0.693
λ = 0.693 × T₁/₂
λ = 0.693 / T₁/₂
λ = T₁/₂ / 0.693

8. What is the formula for activity?

λ/N
λN
N/λ
λ²N

9. What is the SI unit of radioactive activity?

Becquerel (Bq)
Curie (Ci)
Gray (Gy)
Sievert (Sv)

10. What are the properties of alpha radiation?

High penetration, low ionisation
Low penetration, high ionisation
Medium both
No ionisation

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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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