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 ture
B. B and C are ture
C. C and D are ture
D. A and D are ture

Explanation

To solve the question, we need to analyze each statement regarding the wavelengths of different types of electromagnetic waves.

### Step-by-step Solution:

1. **Understanding the Electromagnetic Spectrum**:
The electromagnetic spectrum is arranged in order of decreasing wavelength. The order is as follows:
- Radio Waves
- Microwaves
- Infrared Rays
- Visible Light
- Ultraviolet Rays
- X-rays
- Gamma Rays

2. **Analyzing Statement A**:
- "The wavelength of microwaves is greater than that of ultraviolet rays."
- From the spectrum, microwaves have wavelengths ranging from 0.1 meter to 1 millimeter, while ultraviolet rays have wavelengths ranging from 400 nanometers (0.4 micrometers) to 1 nanometer.
- Since 1 millimeter (1000 micrometers) is greater than 0.4 micrometers, **Statement A is true**.

3. **Analyzing Statement B**:
- "The wavelength of infrared rays is lesser than that of ultraviolet rays."
- Infrared rays have wavelengths ranging from 1 millimeter to 700 nanometers. Since 700 nanometers is greater than 400 nanometers, **Statement B is false**.

4. **Analyzing Statement C**:
- "The wavelength of microwaves is lesser than that of infrared rays."
- As previously stated, microwaves range from 0.1 meter to 1 millimeter, while infrared rays range from 1 millimeter to 700 nanometers. Since 1 millimeter is greater than 0.1 meter, **Statement C is false**.

5. **Analyzing Statement D**:
- "Gamma ray has the shortest wavelength in the electromagnetic spectrum."
- Gamma rays have wavelengths less than 10^-3 nanometers, which is indeed the shortest wavelength compared to all other types of electromagnetic waves. **Statement D is true**.

6. **Conclusion**:
- The true statements are A and D. Therefore, the correct option is **A and D are true**.

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