While measuring viscosity of caster oil using terminal velocity concept the following observation table has been taken by a student.
Which one is the first correct reading which he should consider for the computation of terminal velocity?
S.No. | Distance | Time |
1. | 20 cm | 1 s |
2. | 20 cm | 1.4 s |
3. | 20 cm | 1.8 s |
4. | 20 cm | 1.81 s |
5. | 20 cm | 1.82 s |
Text Solution
Verified by ExpertsThe correct answer is:
C
After 2nd reading, i.e. from 3rd reading the velocity of the ball is almost constant, so this is the first correct reading which shows that terminal speed has been acquired by ball.
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