Q. With reference to the Einstein Cross, consider the following statements:
1.It is a type of celestial phenomenon where four separate stars align perfectly, creating a cross-shaped pattern in the night sky.
2.Einstein Crosses are extremely rare..
Select the correct answer from the codes given below:
Answer: B
Notes:
Explanation –
Statement 1 is incorrect. In Einstein Cross, a galaxy is so perfectly aligned between a more distant galaxy and the Earth that the light from the distant galaxy is bent and split into four separate images, arranged in a cross-shaped pattern. This phenomenon is known as gravitational lensing.
Statement 2 is correct. Einstein Crosses are extremely rare, because they require a perfect alignment of three objects: the lensing galaxy, the distant galaxy, and the Earth.
Source: DNA
