Q. A massive particle X in free space decays spontaneously into two photons. Which of the following statements is true for X?
(A) X is charged
(B) Spin of X must be greater than or equal to 2
(C) X is a boson
(D) X must be a baryon
Ans: X is a boson
![Determine the correctness (or otherwise) of the following Assertion [A] and the Reason [R]](https://www.gkseries.com/blog/wp-content/uploads/2023/10/Determine-the-correctness-or-otherwise-of-the-following-Assertion-A-and-the-Reason-R.jpg)
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