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The inside portion of part of a hollow metal sphere of diameter 20cm is polished....

Physics
JAMB 1999

The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a
  • A. concave mirror of focal length 5cm
  • B. concave mirror of focal length 10cm
  • C. convex mirror of focal length 5cm
  • D. convex mirror of focal length 20cm
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Correct Answer: Option A
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Join your school's WhatsApp group
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709