Question

⭐please solve this question⭐​

Answer 1

Option b

Explanation:

As from law of heat transfer through conduction

H = ∆Q / ∆t = KA [ T1 - T2 / 1 ]

=> H ∝ r^2 / I

a ) When r = 2 ro ; l = 2r^2o / Io

b ) When r = 2 ro ; l = lo

H ∝ ( 2ro )^2 => H ∝ 4ro^2 / lo

c ) When r = ro ; l = lo => H ∝ r^2 / Io

d ) When r = ro ; l = 2lo => H ∝ ro^2 / 2lo

∴ It is obvious that the heat condition will be more in this case!!

Answer 2

Explanation:

Answer:-

⭐As from law of heat transfer through conduction

• H = ∆Q / ∆t = KA [ T1 - T2 / 1 ]

=> H ∝ r^2 / I

• a ) When r = 2 ro ; l = 2r^2o / Io

• b ) When r = 2 ro ; l = lo
• H ∝ ( 2ro )^2 => H ∝ 4ro^2 / lo

• c ) When r = ro ; l = lo => H ∝ r^2 / Io

• d ) When r = ro ; l = 2lo => H ∝ ro^2 / 2lo

∴ It is obvious that the heat condition will be more in this case!!

hope this helps you ☺️