The kinetic energy of a particle executing S.H.M. is 16J when it is at its mean position if the amplitude of oscillation is 25cm , and the mass of the particle is 5.12kg then time period of the oscillation is: (A) 20πsec (B) 2πsec (C) π5sec (D) 5πsec

What type of questions asked from the lesson of magnetic effect of electric current 

Wavelength of green light is

A) 400-450 nm

B) 500-550 nm

C) 660-720 nm

D) 720-800 nm

What is the difference between anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?

What are the main components of our environment? Explain each of them briefly.

What are examples of hydrotropism plants?