Which one of the following principles of physics is applied in the extraction of smoke and dust particles from gases in smokestacks?
تمباکو نوشی میں گیسوں سے دھواں اور دھول کے ذرات کو نکالنے میں طبیعیات کے مندرجہ ذیل میں سے کون سا اصول لاگو ہوتا ہے؟
Answer: Static electricity
Explanation
Static electricity is used in electrostatic precipitators to remove smoke and dust particles from gases in smokestacks.
Charged particles are attracted to plates with opposite charge, cleaning the air before release.
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