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Answer the following briefly. ( Answer should not be of more than one or two line ) (i) Can friction coeffiecient be greater than unity ? (ii) Why is friction force Nonconservation force ? (iii) Can frictio do positive work ? (iv) Is earth an inertial frace ?
Define modulation index. Why is it generally kept less than one ?
Define modulation index. Why is it generally kept less than one ?
What is static friction ? Why is it called so ?
Give reason why : Is roasting generally carried out on sulphide ores and not on carbonate ores ?
What is (i) dry friction and (ii) fluid friction ?
Answer the following : (a) Why are the connections between the resistors in a meter bridge made of thick copper strips? (b) Why is it generally preferred to obtain the balance point in the middle of the meter bridge wire?
Why is haemophilia generally observed in human males ? Explain the conditions under which a human female can be haemophilic. (b) Draw the male Reproductive system.
Lubrication reduces friction because
If mu,R and S represent coefficient of friction, normal reaction and distance moved, then the general expression for work against friction
ICSE-FORCE-Exercises (Section II) Long answer questions.
