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What is the correct order of velocity of...

What is the correct order of velocity of alpha `(alpha) and, " beta " (beta)` and gamma `(gamma)` rays

A

`alpha gt beta gt gamma`

B

`alpha gt gamma beta`

C

`gamma gt alpha gt beta`

D

`gamma gt beta gt alpha`

Text Solution

AI Generated Solution

The correct Answer is:
To determine the correct order of velocity of alpha, beta, and gamma rays, we need to consider the properties of these particles, specifically their mass and energy. ### Step-by-Step Solution: 1. **Identify the Types of Rays**: - Alpha rays (α): These are helium nuclei, consisting of 2 protons and 2 neutrons. They are relatively heavy. - Beta rays (β): These are electrons (or positrons) emitted during radioactive decay. They are much lighter than alpha particles. - Gamma rays (γ): These are high-energy electromagnetic radiation, with no mass. 2. **Understand the Relationship Between Mass and Velocity**: - According to classical physics, the velocity of a particle is inversely related to its mass when energy is constant. This means that lighter particles can travel faster than heavier ones. 3. **Energy Consideration**: - Gamma rays have the highest energy, followed by beta rays, and then alpha rays. However, energy does not directly determine velocity; mass does. 4. **Compare the Masses**: - Alpha particles are the heaviest, beta particles are lighter, and gamma rays have no mass. Therefore, we can infer that: - Gamma rays (no mass) will travel the fastest. - Beta particles (light) will travel faster than alpha particles (heavy). 5. **Establish the Order of Velocity**: - Since gamma rays have no mass, they will have the highest velocity. - Beta rays, being lighter than alpha rays, will have a higher velocity than alpha rays. - Therefore, the order of velocity from highest to lowest is: - Gamma (γ) > Beta (β) > Alpha (α) ### Final Answer: The correct order of velocity is: **Gamma (γ) > Beta (β) > Alpha (α)**
To determine the correct order of velocity of alpha, beta, and gamma rays, we need to consider the properties of these particles, specifically their mass and energy. ### Step-by-Step Solution: 1. **Identify the Types of Rays**: - Alpha rays (α): These are helium nuclei, consisting of 2 protons and 2 neutrons. They are relatively heavy. - Beta rays (β): These are electrons (or positrons) emitted during radioactive decay. They are much lighter than alpha particles. - Gamma rays (γ): These are high-energy electromagnetic radiation, with no mass. ...
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