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JEE Mains Model Paper 12
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© examsnet.com
Question : 31
Total: 90
The dimensional method can be used to obtain dependence of
the height to which liquid rises in the capillary tube
speed of sound in elastic medium and modulus of elasticity
height to which a body, projected upwards with a certain velocity, will rise in time t
the decrease in energy of a damped oscillator on time t
Validate
Solution:
The height of a liquid in capillary tube depends on cosθ
The height S to which a body rises is given by cosθ , which is sum of two terms
The energy of damped oscillator decreases exponentially with time
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