There are 27 drops of a conducting fluid. Each drop has a radius r, and each of them is charged with the same potential V1. They are all combined to form a bigger drop. The potential of the bigger drop is V2. Find the ratio V2/V1. Ignore the change in density of the fluid on combining the drops.

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?