Materials which can readily be inspected with frequencies of 1 to 5 MHz are:

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Mr. Dubey • 52.74K Points
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Q. Materials which can readily be inspected with frequencies of 1 to 5 MHz are:

(A) Steel, cast iron and concrete

(B) Titanium, wood and aluminium

(C) Magnesium, titanium and steel

(D) All of the above

Correct Answer - Option(C)
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