JEE Advanced 2021 Full Test 5 Paper 2

A lizard of mass 4g is warming itself in the bright sunlight. Its surface area is 4.2cm2, but its body casts a shadow of area 1.4cm2 on a piece of paper held perpendicular to sun rays. The intensity of sun rays at earth is 1000W∕m2. Assume that specific heat capacity of lizard is same as that of water and its body behaves like a black body, also neglect the radiation from the lizard's body. How long (in minutes) must lizard lie in sun in order to raise its temperature by 5°C. Specific heat capacity of water is 4200J∕kg°C. If your answer is n fill value

n

5

.