A metal rod of length 10 cm and diameter 2 cm is covered with a non conducting substance…
Physics · Class 11 · CBSE — Thermal Properties of Matter
A metal rod of length 10 cm and diameter 2 cm is covered with a non conducting substance. One end of it is maintained at 80°C, while the other end is put at 0°C. It is found that 20 g of ice melts in 5 min. Find the coefficient of thermal conductivity of metal in
J s–1 m–1 K–1 (Take latent heat of ice is 80 cal g–1)
J s–1 m–1 K–1 (Take latent heat of ice is 80 cal g–1)
- 4.2
- 6.8
- 7.2
- 8.9
Answer
(A) 4.2
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- When 1.5 kg of ice at 0°C mixed with 2 kg of water at 70°C in a container, the resulting temperature is 5°C…
- Two spheres A and B are made of the same material and have the same radius. Sphere A is hollow and sphere B…
- If a ball of 80 kg mass hits an ice cube and temperature of ball is 100 °C, then how much ice converted into…
- Length of a wire at room temperature is 4.55 m, when the temperature increases upto 100°C then its length…
- Rays from the sun are focused by a lens of diameter 5 cm on to a block of ice and 10 g of ice is melted in 20…
- Which one of the following substances is highest specific heat capacity at room temperature and atmospheric…
- Two spheres of the same material have radii 1 m and 4 m and temperatures 4000 K and 2000 K respectively. The…
- Two bars of same length and same cross-sectional area but of different thermal conductivities K 1 and K 2 are…
More Thermal Properties of Matter questions · Browse all practice questions