Question

Electromagnetic waves have a speed of
(a) 3 x 10^5 kms-1
(b)3 x 10^6 kms 1
(c) 3 x 10^7 kms 1
(d) 3 x 10^8 kms 1​

Answer 1

Answer:

d is the correct absi

hopefully

hopi

Answer 2

Answer:

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Electromagnetic waves have a speed of :-

(d) 3 x 10^8 kms 1