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Question
Calculate the runoff (cm) from a rainfall of 3 hours. The intensity of the rainfall is 2 cm/hr. The evaporation and infiltration losses are 8 mm and 16 mm respectively.
3 ?kaVs dh o"kkZ ls vafre o"kkZ (lseh) dh x.kuk djsaA o"kkZ dh rhozrk 2 lseh@?kaVk gS] ok"ihdj.k vkSj fjlko ds gkfu Øe'k% 8 feeh vkSj 16 feeh gSaA
A.
1.2
B.
2.8
C.
3.6
D.
6.8
Answer ( Option C)

3.6

Solution

Total rainfall in 3 hrs
= 2 × 3  = 6 cm
Total water lost in evaporation & infiltration
= 0.8 + 1.6  = 2.4 cm
Runoff = 6 – 2.4  =3.6 cm

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