A) \[{{t}_{1}}={{t}_{2}}\]
B) \[{{t}_{1}}>{{t}_{2}}\]
C) \[{{t}_{1}}<{{t}_{2}}\]
D) none
Correct Answer: C
Solution :
| If \[v\] is the velocity of insect and \[v\] is the velocity of strip (opposite direction), then \[l=\left( v+u \right){{t}_{1\,}}\] |
| \[\therefore {{t}_{1}}=\frac{\ell }{\left( v+u \right)}\] |
| When insect fly off, \[{{t}_{2}}=\frac{\ell }{u}\] |
| Clearly, \[{{t}_{2}}>{{t}_{1}}\] |
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