Question

38. Which statement is or are correct:

(i)Fluid friction can be minimised by giving suitable shapes to bodies moving

in fluids.

(ii)The frequency is expressed in hertz(Hz)

(iii) An earthquake doesn’t shaking or trembling of the earth.

a)I only c) II only

b) I and II d) None​

Answer 1

Answer:

Option b. I and ll is the correct answer

Answer 2

option b] is correct

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