A. Wavelength of microwaves is greater than that of ultraviolet rays.
B. The wavelength of infrared rays is lesser than that of ultraviolet rays.
C. The wavelength of microwaves is lesser than that of infrared rays
D. Gamma ray has shortest wavelength in the electomagnetic specturum
Choose the correct option.

Options

A. A and B are true
B. B and C are true
C. C and D are true
D. A and D are true

Answer

To solve the question, we need to analyze each statement regarding the wavelengths of different types of electromagnetic waves. The electromagnetic spectrum includes various types of waves, each with different wavelengths and frequencies.

### Step-by-Step Solution:

1. **Understanding the Electromagnetic Spectrum**:
- The electromagnetic spectrum consists of various types of electromagnetic radiation, including gamma rays, X-rays, ultraviolet rays, visible light, infrared rays, microwaves, and radio waves.
- In the electromagnetic spectrum, the wavelength and frequency are inversely proportional; as the wavelength increases, the frequency decreases.

2. **Analyzing Statement A**:
- **Statement A**: "Wavelength of microwaves is greater than that of ultraviolet rays."
- Microwaves have longer wavelengths than ultraviolet rays. Therefore, this statement is **true**.

3. **Analyzing Statement B**:
- **Statement B**: "The wavelength of infrared rays is lesser than that of ultraviolet rays."
- Infrared rays have longer wavelengths than ultraviolet rays. Therefore, this statement is **false**.

4. **Analyzing Statement C**:
- **Statement C**: "The wavelength of microwaves is lesser than that of infrared rays."
- Microwaves have longer wavelengths than infrared rays. Therefore, this statement is **false**.

5. **Analyzing Statement D**:
- **Statement D**: "Gamma ray has the shortest wavelength in the electromagnetic spectrum."
- Gamma rays do indeed have the shortest wavelengths in the electromagnetic spectrum. Therefore, this statement is **true**.

6. **Conclusion**:
- From the analysis, we find that statements A and D are true, while statements B and C are false.
- Therefore, the correct options are A and D.

### Final Answer:
The correct options are A and D.

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