Two closed containers of same dimensions made of different materials are completely filled with ice. The ice…

Two closed containers of same dimensions made of different materials are completely filled with ice. The ice in the first container takes 20 minutes and that in the second container takes 10 minutes, respectively for complete melting. The ratio of the thermal conductivities of the materials of the two containers is _________ .
  1. $1: 2$
  2. $2: 1$
  3. $3: 1$
  4. $1: 3$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (26 Apr Shift 2)

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