Resolving Power of Optical Instruments Telescope

# Resolving Power of Optical Instruments Telescope Video Lecture | Physics for ACT

## Physics for ACT

169 videos|131 docs|69 tests

## FAQs on Resolving Power of Optical Instruments Telescope Video Lecture - Physics for ACT

 1. What is the resolving power of an optical telescope?
Ans. The resolving power of an optical telescope refers to its ability to distinguish between two closely spaced objects. It determines the smallest angular separation between two point sources that can still be resolved as separate entities by the telescope.
 2. How is the resolving power of a telescope determined?
Ans. The resolving power of a telescope is determined by the formula: Resolving Power = 1.22 * (wavelength of light used) / (diameter of the telescope's objective lens or mirror). This formula indicates that the resolving power increases with larger telescope diameters and shorter wavelengths of light.
 3. Can the resolving power of a telescope be improved?
Ans. Yes, the resolving power of a telescope can be improved by increasing the diameter of the objective lens or mirror. A larger diameter allows more light to enter the telescope, resulting in better resolution. Additionally, using shorter wavelengths of light can also enhance the resolving power.
 4. What factors limit the resolving power of a telescope?
Ans. The resolving power of a telescope is limited by several factors. The most significant limitation is atmospheric turbulence, which causes the phenomenon known as "seeing." Other factors include the quality of the telescope's optics and the wavelength of light used. These limitations can affect the clarity and sharpness of the observed image.
 5. How does the resolving power of a telescope affect its usefulness?
Ans. The resolving power of a telescope directly impacts its ability to reveal fine details in astronomical objects. A higher resolving power allows astronomers to study intricate features such as craters on the Moon, planetary atmospheres, and distant galaxies. Therefore, telescopes with better resolving power are highly valued in the field of astronomy.

## Physics for ACT

169 videos|131 docs|69 tests

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