Home
Class 11
PHYSICS
The only possibility of heat flow in a t...


The only possibility of heat flow in a thermos flask is through its cork which is `75cm^2` in area and 5 cm thick its thermal conductivity is `0.0075 cal//cm-s-^@C`. The outside temperature is `40^@C` and latent heat of ice is `80 cal//g`. Time taken by 500 g of ice at `0^@C` in the flask to melt into water at `0^@C` is `

Promotional Banner

Similar Questions

Explore conceptually related problems

The only possibility of heat flow in a thermos flask is through its cork which is 75 cm^(2) in area and 5 cm thick. Its thermal conductivity is 0.0075 cal//cm sec^(@)C . How lolng will 500 g of ice at 0^(@)C in thermos flask will is 40^(@)C and latent heat of ise is 80 cal.//gram .

The entropy change in melting 1g of ice at 0^@C . (Latent heat of ice is 80 cal g^(-1) )

The thickness of ice in a lake is 10 cm and its temperature is -10^(0)C . The thermal conductivity of ice = 0.004 cal cm^(-1)" sec"^(-1)""^(0)C^(-1) . Density of ice = 0.92 g/cc, latent heat of ice = 80 cal/g. The time taken for thickness of ice to be doubled is

The water of mass 75 g at 100^(@)C is added to ice of mass 20 g at -15^(@)C . What is the resulting temperature. Latent heat of ice = 80 cal//g and specific heat of ice = 0.5 .

Calculate change in entropy when 5g of pure ice melts to form water at 0^(@)C Given latent heat of ice is 80cal//g at 0^(@)C .

Find the heat required to convert 20 g of iceat 0^(@)C into water at the same temperature. ( Specific latent heat of fusion of ice =80 cal//g )

Find the heat required to convert 20 g of ice at 0⁰C into water at the same temperature . (Specific latent heat of fusion of ice = 80 cal/g)

1 of a steam at 100^@C melts how much ice at 0^@C ? ( Latent heat of ice=80 cal/g and latent heat of steam =540 cal/g )