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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