Question

solve the question paper

Answer 1

ans.18
b) the small intestine is the main region for the absorption of digested food. the inner lining of small intestine is covered by millions of tiny finger like projections called villi. it provides large surface area for absorption of food
 
ans.1).concave mirror 2).concave mirror 
such mirror are used by dentist to see larger images of teeth and in solar furnaces coz large concave mirror is used to concentrate sunlight to produce heat