Assertion(A) : Liquefied cryogenic gases are sprayed on electric cables in big cities.
Reason(R): Liquefied cryogenic gases prevent wastage of power.
i) A is incorrect and R is correct. ii) A is correct and R is incorrect
iii) Both A and R are incorrect. iv) A is correct and R supports A.
TNSCERT Class 10 Physics Ch 15 Laws of Motivation and Gravitation
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iv) A is correct and R supports A.
Liquefied gases are sprayed on the cables to keep them cool and reduce their resistance (prevents wastage of power)
Liquefied gases are sprayed on the cables to keep them cool and reduce their resistance (prevents wastage of power)
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