48.Q.48.Which chemical is used to coat the tape of tape recorder –
a.Copper Sulphate
b.Mica
c.Ferromagnetic Powder
d.Zinc Oxide
Option 2
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Answer:
The tape is coated with fine particles of a magnetic substance, usually an oxide of iron, cobalt, or chromium. The coating is normally held on the tape with a special binder.
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