A micro-wave and an ultrasonic sound wave have the same wavelength. Their frequencies are in the ratio (approximately)
A micro-wave and an ultrasonic sound wave have the same wavelength. Their frequencies are in the ratio (approximately)
A. `10^(2)`
B. `10^(4)`
C. `10^(6)`
D. `10^(8)`
4 views
1 Answers
Correct Answer - C
Frequency of microwaves, `upsilon_(m) ~~ 10^(11)Hz`
Frequency of ultrasonic sound waves, `upsilon_(u) ~~ 10^(5) Hz`
`:. (upsilon_(m))/(upsilon_(u)) = (10^(11))/(10^(5)) = 10^(6)`
4 views
Answered