Fill in the blanks: (a) The inner surface of a steel spoon acts as a ___________ mirror.
Fill in the blanks:
(a) The inner surface of a steel spoon acts as a ___________ mirror.
(b) The outer surface of a flat steel plate acts as a ___________ mirror.
(c) The outer shining surface of a round bottom steel bowl acts as a __________ mirror.
(d) The inner surface of the reflector of a torch acts as a __________ mirror.
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