Which concept was supported by taking measurements of the same stars at night and then again during solar eclipses? gravitational lensing principle of equivalence gravitational time dilation gravitational redshift

The concept of gravitational lensing was supported by taking measurements of the positions of stars at night, and then measuring the positions of the same stars again, several months later, during solar eclipses.

Hi! The answer would be letter A.

Explanation:

Gravitational lensing is a distribution of matter between a distant light source and an observer. This makes it capable to bend the light from the source as the light travels towards the observer. Therefore, the concept that supports taking measurements of the same stars at night and then again during solar eclipses would be gravitational lensing.

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees.