The resolving power of a telescope refers to its ability to distinguish between two closely spaced objects. It is dependent on various factors, but the most significant factor is the diameter of the telescope. The larger the diameter, the higher the resolving power.

Factors affecting resolving power:

1. Diameter of the telescope: The resolving power of a telescope is directly proportional to its diameter. The larger the aperture, the better the resolution. This is because a larger aperture allows more light to enter the telescope, resulting in a brighter and sharper image, which makes it easier to distinguish between two closely spaced objects.

2. Focal length of the objective lens: The focal length of the objective lens is also an important factor that affects the resolving power of a telescope. A longer focal length means a higher magnification, which can help in distinguishing between two closely spaced objects. However, a longer focal length also means a narrower field of view, which may make it difficult to find the objects in the first place.

3. Atmospheric conditions: The resolving power of a telescope is also dependent on atmospheric conditions. The turbulence in the atmosphere can distort the light entering the telescope, making it difficult to distinguish between two closely spaced objects. This effect is known as seeing.

Conclusion:

In conclusion, the resolving power of a telescope depends on various factors, but the most significant factor is the diameter of the telescope. A larger aperture allows more light to enter the telescope, resulting in a brighter and sharper image, which makes it easier to distinguish between two closely spaced objects. Other factors such as the focal length of the objective lens and atmospheric conditions also play a role in determining the resolving power of a telescope.

The resolving power of a telescope depends upon diameter of the telescope light gathering apparatus or objective.... As the diameter of telescope objective increases...resolving power increases.