An object is placed at a distance of 12cm from a concave mirror. The image formed will be real and four times larger than the object. Find out the distance of the image from the mirror. An object is placed 24cm from a concave mirror. The image formed will be inverted and double the size of the object. Calculate the focal length of the mirror and the position where the image will be formed.

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?