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Question

Two identical metal sheets, A and B are rubbed with paper and sand paper respectively. Which one of them will shine more?

एक जैसी दो धात्विक पट्टिकाओं A तथा B को क्रमशः कागज तथा रेगमाल से रगड़ा जाता है। इनमें से कौनसी पट्टिका अधिक चमकेगी?

A
Sheet-A because friction between paper and metal sheet is lesser

पट्टिका-A, क्योंकि कागज तथा धात्विक पट्टिका के मध्य घर्षण कम है
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B
Sheet-B because friction between sand paper and metal sheet is larger

पट्टिका-B, क्योंकि रेगमाल तथा धात्विक पट्टिका के मध्य घर्षण अधिक है
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C
Sheet-B because friction between sand paper and metal sheet is lesser

पट्टिका-B, क्योंकि रेगमाल तथा धात्विक पट्टिका के मध्य घर्षण कम है
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D
Both sheets, A and B will shine equally

दोनों पट्टिकाऐं A तथा B समान रूप से चमकेंगी
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Solution

The correct option is B Sheet-B because friction between sand paper and metal sheet is larger

पट्टिका-B, क्योंकि रेगमाल तथा धात्विक पट्टिका के मध्य घर्षण अधिक है

Solution

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