Physics · Light - Reflection and Refraction
A concave mirror with a focal length 'f' is cut into two equal halves along the principal axis. What happens to the focal length of each half?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It becomes undefined.
- 2It doubles to 2f.
- 3It remains f.✓
- 4It becomes f/2.
Correct answer
It remains f.
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