The height of a hydraulic jump in the stilling pool of 1.25

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The height of a hydraulic jump in the stilling pool of 1.25 scale model was observed to the 10 cm. The corresponding prototype height of the jump is

1. not determinable from the data given
2. 2.5 m
3. 0.5 m
4. 0.1 m

Correct Option: B

L_r = 1.25

L_r =	h_m
	h_p

	1	=	10
	25		h_p

⇒ h_p = 250 cm = 2.5 m