Question

hlo...try this....................​

Answer 1

Answer:

hlo matr........

see attachment

Answer 2

Answer:

bita = lemda ×D /d

therefore ,D= bita ×d /lemda

or, D = 4× 10^-3 × 0.1×10^-3/ 4× 10^-7

= 1m

Hope it helps you ,

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