Draw a labeled diagram of a solar cooker. What purposes are served by the blackened surface, glass cover plate, and mirror in a solar cooker? What would happen if the plane glass mirror of a solar cooker is replaced by a concave glass mirror?

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?