In a sonometer experiment, the bridges are separated by a fixed distance. The wire which is slightly elastic emits a tone of tension is increased to 4T, the tone emitted by the wire will be of a frequency (A) n (B) 2n (C) slightly greater than 2n (D) slightly less than 2n

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?