A micro-wave and an ultrasonic sound wave have the same wavelength. Th – McqOptions

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1.	A micro-wave and an ultrasonic sound wave have the same wavelength. Their frequencies are in the ratio (approximately) [Kerala (Engg.) 2002]
A.	106 : 1
B.	104 : 1
C.	102 : 1
D.	10 : 1
Answer» B. 104 : 1

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