Q.

Ice starts forming on the surface of the lake and takes 8 hrs to form a layer of 11 cm thick. How much time will it take to increase the thickness of layer by 2 cm further?

Moderate

Unlock the Full Solution and Master the Concept

Get a detailed solution and exclusive access to our masterclass to ensure you never miss a concept
By Expert Faculty of Sri Chaitanya

a

8 hours

b

less than 3 hours

c

between  8 to 16 hours

d

3.17 hour

answer is 4.

(Detailed Solution Below)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

time required to form x thickness of ice is t=ρL2Kθ(x22-x12 )   here ρ is density of ice; L is latent heat of fusion of ice; K is coefficient of thermal conductivity; θ is temperature of atmosphere t α (x22-x12 ) t1=8 hours; x1=0cm;x2=0cm;x3=13cm t2=? t1t2=(x22-x12 )(x32-x22 ) 8t2=112-02132-112 t2=8 x 48121=3.17 hour
ctaimg
Choose your Grade and Exam
edit icon

Connect with our

Expert Counsellors

access to India's best teachers with a record of producing top rankers year on year.

+91

We will send a verification code via OTP.

whats app icon