Radioactivity & Decay

Alpha, beta, gamma, and half-life concepts. Ideal for students preparing board exams and competitive tests.

Questions

Attempts

Passed

Failed

Likes

Views

QUESTION NO 01

Atomic number Z equals number of?

Answer: Protons in the nucleus

Z = number of protons (defines the element).

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 02

Isotopes have same?

Answer: Atomic number but different mass number

Isotopes: same Z, different N (hence different A).

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 03

Radioactivity is?

Answer: Spontaneous nuclear decay

Radioactive decay is spontaneous transformation of unstable nuclei.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 04

Alpha particle is?

Answer: Helium nucleus (2p+2n)

α = ⁴He nucleus.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 05

Beta-minus particle is?

Answer: Electron

β⁻ emission sends out an electron (and antineutrino).

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 06

Gamma rays are?

Answer: High-energy photons

γ radiation is electromagnetic radiation from nuclei.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 07

Half-life is the time for?

Answer: Half the radioactive nuclei to decay

T½ is time for N → N/2.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 08

E = mc² relates?

Answer: Mass and energy equivalence

Rest energy E₀ = mc²; mass–energy equivalence.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 09

Pair production requires photon energy at least?

Answer: 1.022 MeV

Creating e⁻e⁺ needs ≥ 2 × 511 keV = 1.022 MeV.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

QUESTION NO 10

X-rays are produced when?

Answer: Fast electrons strike a metal target

Bremsstrahlung/characteristic X-rays arise from electron–target interactions.

Shahzad Mahota @shahzad-mahota

302 Quizzes

2930 Questions

00 Likes

Published By

Shahzad Mahota

@shahzad-mahota

WAS THIS QUIZ HELPFUL?

Please help us improve by giving us your feedback.

YOUR SCORE CARD

00

Attempts

00

Correct

00

Incorrect

01 02 03 04 05 06 07 08 09 10

WAS THIS QUIZ HELPFUL?

YOUR SCORE CARD

00

Attempts

00

Correct

00

Incorrect

01 02 03 04 05 06 07 08 09 10

Quiz complete See your shareable result poster

View result

Quiz Categories

Explore

Content

Create

Discover

Account

More

Radioactivity & Decay

Atomic number Z equals number of?

Isotopes have same?

Radioactivity is?

Alpha particle is?

Beta-minus particle is?

Gamma rays are?

Half-life is the time for?

E = mc² relates?

Pair production requires photon energy at least?

X-rays are produced when?

Published By

Shahzad Mahota

00

00

00

00

00

00

Radioactivity & Decay

Atomic number Z equals number of?

Explanation

Isotopes have same?

Explanation

Radioactivity is?

Explanation

Alpha particle is?

Explanation

Beta-minus particle is?

Explanation

Gamma rays are?

Explanation

Half-life is the time for?

Explanation

E = mc² relates?

Explanation

Pair production requires photon energy at least?

Explanation

X-rays are produced when?

Explanation

Published By

Shahzad Mahota

00

00

00

00

00

00

Related Quizzes

Atomic Models & Spectra

Matter Waves & Uncertainty

Nuclear Structure Basics

Modern Physics Mixed Drill

Fission, Fusion & E=mc²

Photoelectric Effect Quiz