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An electric bell operated within an evacuated bell jar en...

An electric bell operated within an evacuated bell jar enables us to infer correctly that

A.

light waves require a medium for transmission

B.

sound waves do not require a medium for transmission

C.

light waves do not require a medium for transmission but sound waves do

D.

light waves travel much faster than sound waves

E.

light waves and sound waves travel at the same speed

Correct answer is C

No explanation has been provided for this answer.