Choose the correct statements

Options

A. The nature of cathode ras does not depend on the nature of gas taken in discharge tube
B. Anode rays cause sputtering when incident on metal
C. Cathode rays produce X rays when they are abruptly stopped by metallic obstacle and nature of X rays produced depends only on metal and not on cathode rays
D. The degree of deflection in same magnetic field vary in case o anode rays produced from different gases taken in discharge tube

Answer

To solve the question of choosing the correct statements regarding cathode rays and anode rays, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement A: The nature of cathode rays do not depend on the nature of gas taken in the discharge tube.**
- **Explanation:** Cathode rays are streams of electrons. The properties of cathode rays are intrinsic to electrons and do not change based on the type of gas in the discharge tube. Therefore, this statement is **correct**.

2. **Statement B: Anode rays cause sputtering when incident on metal.**
- **Explanation:** Anode rays consist of positively charged particles (often ions). When these rays strike a metal surface, they can impart energy to the metal atoms, causing them to be ejected from the surface, a phenomenon known as sputtering. Thus, this statement is also **correct**.

3. **Statement C: Cathode rays produce x-ray when they are abruptly stopped by a metallic obstacle and the nature of x-ray produced depends only on the metal and not on cathode ray.**
- **Explanation:** When high-energy electrons (cathode rays) strike a metal target, they can produce X-rays through a process called Bremsstrahlung radiation. However, the nature of the X-rays produced does depend on the energy of the cathode rays and the type of metal used. Therefore, this statement is **incorrect**.

4. **Statement D: The degree of deflection in the same magnetic field varies in case of anode rays produced from different gases taken in the discharge tube.**
- **Explanation:** Anode rays are influenced by the charge-to-mass ratio of the ions produced, which can vary depending on the gas used in the discharge tube. As a result, the degree of deflection in a magnetic field will differ for anode rays from different gases. Thus, this statement is **correct**.

### Conclusion:
Based on the analysis:
- **Correct Statements:** A, B, and D.
- **Incorrect Statement:** C.

### Final Answer:
The correct statements are A, B, and D.

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