Question

12. For water at 0°C it takes one hour for first 3 mm
of ice layer formation. How much time will it take
for next 6 mm of ice formation?
(1) 2 hour
(2) 4 hour
(3) 6 hour
(4) 8 hour

Xplain in stepwise manner

NO SPAM!!!​

Answer 1

$\huge\bf{Answer:-}$

Option (4) [ 8 hours ]

$= > t1 /t2=(x1/x2)^2 - eqution (1) \\ </p><p> = > t1=2 hour \\ </p><p> = > t1=3mm \\ </p><p> = > t2= \: (find) \\ </p><p> = > x2=6mm$

Adding values in (1)

$= > \frac{2}{t2} =( \frac{3}{6} ) {}^{2} \\ </p><p> = > \frac{2}{t2} = \frac{9}{36} \\ </p><p> = > 2× \frac{36}{9} =t2 \\ </p><p> = > t2=8 hours.$

.•. t2= 8 hours.

Answer 2

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12. For water at 0°C it takes one hour for first 3 mm

of ice layer formation. How much time will it take

for next 6 mm of ice formation?

(1) 2 hour

(2) 4 hour

(3) 6 hour

Xplain in stepwise manner

correct option is4

(4) 8 hour

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