Question:
Which type of radiation consists of high-energy photons with no mass or charge?
Which type of radiation consists of high-energy photons with no mass or charge?
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Among alpha, beta and gamma radiations, gamma rays have the highest penetrating power but the least ionizing power.
Updated On: Jun 9, 2026
- Alpha radiation
- Beta radiation
- Gamma radiation
- Neutron radiation
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Concept:
Radioactive substances emit three main types of radiation:
• Alpha (\(\alpha\)) rays
• Beta (\(\beta\)) rays
• Gamma (\(\gamma\)) rays
Each has different properties.
Step 1: Examine alpha radiation. Alpha particles are helium nuclei. \[ {}^{4}_{2}He \] They possess mass and positive charge. Therefore, alpha radiation is not the correct answer.
Step 2: Examine beta radiation. Beta rays consist of fast-moving electrons or positrons. They have very small mass and carry electric charge. Hence, beta radiation is also not correct.
Step 3: Examine gamma radiation. Gamma rays are electromagnetic waves of extremely high frequency. They consist of photons. Properties:
• No mass
• No electric charge
• Very high penetrating power
• Travel with the speed of light
Thus gamma radiation satisfies all conditions given in the question.
• Alpha (\(\alpha\)) rays
• Beta (\(\beta\)) rays
• Gamma (\(\gamma\)) rays
Each has different properties.
Step 1: Examine alpha radiation. Alpha particles are helium nuclei. \[ {}^{4}_{2}He \] They possess mass and positive charge. Therefore, alpha radiation is not the correct answer.
Step 2: Examine beta radiation. Beta rays consist of fast-moving electrons or positrons. They have very small mass and carry electric charge. Hence, beta radiation is also not correct.
Step 3: Examine gamma radiation. Gamma rays are electromagnetic waves of extremely high frequency. They consist of photons. Properties:
• No mass
• No electric charge
• Very high penetrating power
• Travel with the speed of light
Thus gamma radiation satisfies all conditions given in the question.
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