Q. Which of the following is a disadvantage of friction?

निम्नलिखित में से कौन सा घर्षण का नुकसान है?

A
Helps in walking
चलने में मदद करता है
B
Produces heat
गर्मी पैदा करता है
C
Helps in writing
लिखने में मदद करता है
D
Helps to stop vehicles
वाहनों को रोकने में मदद करता है

Explanation

While friction has many useful effects (walking, writing, stopping vehicles), it also causes undesired heat production, which can lead to energy loss and wear and tear in machines.

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