World Geography Ultrasound which is upper limit of human hearing is characterized by which of the following frequencies? Below 20 KHz Above 20 KHz Above 200 KHz Above 2 KHz Below 20 KHz Above 20 KHz Above 200 KHz Above 2 KHz ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Ultrasound refers to a sound wave with a frequency greater than the upper limit of human hearing, which is generally over 20 kHz. In general, humans can hear sounds with a frequency between 20 Hz and 20 kHz.
World Geography The ratio of land to ocean in the southern hemisphere is 1 to 1.5 1 to 10 1 to 1 1 to 4 1 to 1.5 1 to 10 1 to 1 1 to 4 ANSWER DOWNLOAD EXAMIANS APP
World Geography The temperature needed to keep the earth's surface and the atmosphere in thermal equilibrium is called the surface temperature equilibrium temperature the mean global surface temperature global temperature the surface temperature equilibrium temperature the mean global surface temperature global temperature ANSWER DOWNLOAD EXAMIANS APP
World Geography The mean surface temperature of the sun is estimated to be of the order of 4000°C 5500°C 2000°C 1000°C 4000°C 5500°C 2000°C 1000°C ANSWER DOWNLOAD EXAMIANS APP
World Geography The place where material is excavated when the zone of maximum stream velocity approaches the stream's bed is called scoured pools riffles ox-bow lakes flood plain scoured pools riffles ox-bow lakes flood plain ANSWER DOWNLOAD EXAMIANS APP
World Geography The slow down slope movement of soil and sediment because of frost heaving and thawing is called gelifluction rockfall frost creep solifluction gelifluction rockfall frost creep solifluction ANSWER DOWNLOAD EXAMIANS APP
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