I have a doubt in lightIt is written that if magnification has a plus sign then image is virtual and erect but if we look at case 2 of image formed by concave mirror I.e when object is at focus then the image formed is larger and real and inverted How is it possible

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?