A) \[\frac{10}{9}\]
B) \[\frac{3}{10}\]
C) \[\frac{10}{3}\]
D) \[\frac{9}{10}\]
Correct Answer: D
Solution :
Ascent formula \[h=\frac{2T\cos \,\theta }{rdg}\] \[\Rightarrow \,\,\frac{{{h}_{1}}}{{{h}_{2}}}\,\,=\,\frac{{{T}_{1}}}{{{T}_{2}}}\,\,\times \,\,\frac{{{d}_{2}}}{{{d}_{1}}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(r,\,\,\theta \,\,and\,\,g\,\,are\,\,constants)\]\[\Rightarrow \,\,\frac{{{h}_{1}}}{{{h}_{2}}}\,\,=\,\frac{60}{50}\,\,\times \,\,\frac{0.6}{0.8}=\frac{9}{10}\]
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