RRB Technician (Grade I Signal + Grade III) 2024 · Question 263 of 1214

Which of the following points always lie(s) on the principal axis of a spherical mirror? i)Principal Focus

best-effort

1. AOnly (i)
2. BBoth (ii) and (iii)
3. COnly (iii)
4. DBoth (i) and (iii)Correct