Q. Which of the following statements regarding dark matter is/are correct?

1. It interacts with light, making it visible through telescopes.
2. Its existence is inferred from galaxy rotation curves and gravitational lensing.
3. It constitutes a major portion of the total mass of the universe.

Select the correct option from the codes given below:
Answer: Only 2 and 3
Notes: Dark matter does not interact with light, making it invisible to telescopes. Its existence is deduced from observed galaxy rotation curves and gravitational lensing effects. It constitutes about 27% of the universe’s energy-mass content, making it a significant portion of the universe’s total mass. Therefore, statements 2 and 3 are correct, while statement 1 is incorrect.