Q. With reference to gravitational lensing, consider the following statements:
1.Gravitational lensing is an effect of Einstein’s theory of general relativity, I.e., mass bends light.
2.It is directly sensitive to the amount and distribution of dark matter.
Which of the statements given above is/are correct?
Answer: C
Notes:
Gravitational lensing is an effect of Einstein’s theory of general relativity – simply put, mass bends light.
The more massive the object, the stronger its gravitational field and hence the greater the bending of light rays – just like using denser materials to make optical lenses results in a greater amount of refraction.
Gravitational lensing is useful to cosmologists because it is directly sensitive to the amount and distribution of dark matter.
Source: The Hindu
