Which one of the following statements is correct? |
(i) Sound waves need material medium to propagate. |
(ii) Electromagnetic waves do not need material medium for their propagation. |
(iii) Mechanical waves can travel even through vacuum. |
(iv) Light waves are longitudinal waves in nature. |
A) (i) and (ii)
B) (ii), (iii) and (iv)
C) (iii) and (iv)
D) (i), (iii) and (iv)
E) None of these
Correct Answer: A
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