A hearing test is conducted on an aged person. It is found that her threshold of hearing is 20 decibels at 1 kHz and it rises linearly with frequency to 60 decibels at 9 kHz. The minimum intensity of sound that the person can hear at 5 kHz is-A. 10 times than that at 1 kHzB. 100 times than that at 1 kHzC. `0.5` times than that at 9 kHzD. `0.05` times than that at 9 kHz

A hearing test is conducted on an aged person. It is found that her th

1.	A hearing test is conducted on an aged person. It is found that her threshold of hearing is 20 decibels at 1 kHz and it rises linearly with frequency to 60 decibels at 9 kHz. The minimum intensity of sound that the person can hear at 5 kHz is-A. 10 times than that at 1 kHzB. 100 times than that at 1 kHzC. `0.5` times than that at 9 kHzD. `0.05` times than that at 9 kHz
Answer» Correct Answer - B

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