What is backlash error and why is it caused? A. Backlash is the error in motion that occurs when gears change direction B. Backlash is the error in reading that occurs due to least count of the instrument C. Backlash is the error in reading that occurs due to zero error of instrument D. None of the above

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?