$\pi $ mesons can be
$\pi $ mesons can be
- A
${\pi ^ + }$ or ${\pi ^ - }$
- B
${\pi ^ + }$ or ${\pi ^0}$
- C
${\pi ^ - }$ or ${\pi ^0}$
- D
${\pi ^ + },\;{\pi ^ - }$ or ${\pi ^0}$
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- [JEE MAIN 2023]
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