Generally what will be the audible range of Gaurav if he is 12 years old?
20Hz to 20000Hz
100Hz to 20000Hz
20Hz to 25000Hz
100Hz to 25000Hz
The audible range of sound for human beings extends from about 20 Hz to 20000 Hz.
Amit is 4 and half years old.Generally what will be the audible range of Amit?
In thirteen years Gaurav will be twenty-four years old. Write the expression for Gaurav's age for 20 years for now. [3 MARKS]