or
or
মানুষের শ্রাব্যতার সীমা কত?
The answer 20 Hz থেকে 20000 Hz is correct because it represents the typical range of human hearing. Humans can generally hear sounds that have frequencies between 20 Hertz (Hz) and 20,000 Hertz (20 kHz). This range allows us to perceive a variety of sounds, from low bass notes to high-pitched tones.
Other options, such as 20 Hz to 200 Hz and 20 Hz to 2000 Hz, are too narrow and do not encompass the full range of human hearing. The option 20 Hz to 200,000 Hz is also incorrect because it extends beyond the capabilities of human hearing.
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