Question

a . Write mirror formula and lens formula in terms of u, v, f, where the

symbols have their usual meanings​

Answer 1

Answer:First we need to notice that acceleration (a) is nothing but rate of change of velocity

Converting this sentence as a equation we get

Acceleration = a

= rate of change in velocity (or) change in velocity per unit time

= Change in Velocity / Time ………………. (1)

Let the initial velocity = u

Final velocity = v

The time taken to attain the final velocity from the initial be = t

Therefore, change in velocity = v-u

Hence equation (1) becomes

→ a = (v-u )/t

(v-u )/t→ at=v-u

Which leads to

v=u+ at

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