PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free Demo1. Why do we hear the sound produced by the humming bees while the sound of vibrations of a pendulum is not heard?
Humming bees produce sound by vibrating their wings, lies in the of hearing for average human being, so it can be heard.
While the sound of vibrations of pendulum is , so it cannot be heard.
2. If any explosion takes place at the bottom of a lake, what type of shock waves in water will take place?
Shock waves in water are , when any explosion takes place at the bottom of a lake.
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