An object is located 8 cm away from a convex lens. The image is 24 cm away from the lens on the other side. What is the focal length of the lens? A. 4 cm
B. 6 cm
C. 16 cm
D. 32 cm

B. 6 cm

Explanation:

First we take down the information given to us,

distance from the lens to the image (v) = 24cm

distance from the original object to the lens (u) = 8cm

So using the formula

1/u + 1/v = 1/f

Where f is the focal length

So we just input our information

1/8 + 1/24 = 1/f

Therefore;

3/24 + 1/24 = 1/f

4/24 = 1/f

1/6 = 1/f

f = 6

Our focal length = 6cm

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.