A man is 180 cm tall and his eyes are 10 cm below the top of his head. In order to see his entire height right from the toe to head, he used a plane mirror kept at a distance of 1 m from him. The minimum length of the plane mirror required is (A) 180 cm (B) 90 cm (C) 85 cm (D) 170 cm

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?