A ray of light passes from medium 1 to medium 2. which of the following quantities of the refracted ray will differ from that of the incident ray speed, intensity, frequency, and wavelength ?

Answer

To solve the question regarding the quantities that differ between the incident ray and the refracted ray when light passes from medium 1 to medium 2, we can analyze the properties of light during refraction.

### Step-by-Step Solution:

1. **Understanding Refraction**:
- When light travels from one medium to another (for example, from air to water), it undergoes refraction, which is the bending of light due to a change in speed.

2. **Analyzing Speed**:
- The speed of light changes when it enters a different medium. For example, light travels faster in air than in water. Therefore, the speed of the refracted ray will differ from that of the incident ray.

3. **Analyzing Wavelength**:
- The wavelength of light is also affected when it passes from one medium to another. Since the speed of light changes and the frequency remains constant, the wavelength must change to maintain the relationship given by the equation:
\[ v = f \lambda \]
where \( v \) is the speed, \( f \) is the frequency, and \( \lambda \) is the wavelength. Thus, the wavelength of the refracted ray will differ from that of the incident ray.

4. **Analyzing Frequency**:
- The frequency of light remains constant when it passes from one medium to another. This is because frequency is determined by the source of the light and does not change during refraction. Therefore, the frequency of the refracted ray will be the same as that of the incident ray.

5. **Analyzing Intensity**:
- The intensity of light can change when it enters a different medium due to reflection and absorption. However, this change is not as straightforward as speed and wavelength, as it depends on the properties of the media involved. Generally, the intensity can differ due to these factors.

### Conclusion:
- The quantities that differ between the incident ray and the refracted ray are:
- Speed (changes)
- Wavelength (changes)
- Intensity (may change)
- Frequency (remains the same)

### Final Answer:
The refracted ray will differ in speed, wavelength, and potentially intensity, while the frequency will remain unchanged.

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