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Grade: 11
        The length of an elastic string is X m when the tension is 8N and Y  m when tension is 10 N. The length in metres when the tension is 18N isi) 4X-5Yii)5Y-4Xiii)9X-4Yiv)4Y-9X
2 years ago

Answers : (1)

jitender
114 Points
							T=kxNow ◇T=k◇x10-8=k (y-x) ...1st18-8=k (z-x) .....2nd2nd÷1st10/2=(z-x)/(y-x)5y-5x=z-xZ=5y-4xSo length of string is 5y-4x when T=18hence ii option is correct
						
2 years ago
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