Answer :

The box is covered by a thick transparent sheet of glass. When the box is placed in the sunlight, the glass cover allows the infrared rays present in sunlight to pass into the box. Then these rays are absorbed by black surface of the box and the box becomes hot. But, after sometime when the black surface becomes hot it starts radiating out heat in the form of infrared rays. But, the glass sheet cover placed over the box does not allow the heat radiated by the black surface to go out from the box. In this way, the glass cover enables the cooker to entrap the heat inside it.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Extraction of MetalExtraction of MetalExtraction of Metal56 mins
Outcomes of DemocracyOutcomes of DemocracyOutcomes of Democracy43 mins
Refraction of Light-2Refraction of Light-2Refraction of Light-241 mins
Reflection of light-2Reflection of light-2Reflection of light-238 mins
Purification of MetalsPurification of MetalsPurification of Metals60 mins
Application of Trigo Important QuestionsApplication of Trigo Important QuestionsApplication of Trigo Important Questions44 mins
Trigonometric Ratios of Specified AnglesTrigonometric Ratios of Specified AnglesTrigonometric Ratios of Specified Angles38 mins
Heating Effect of Electric CurrentHeating Effect of Electric CurrentHeating Effect of Electric Current40 mins
Sum of n Terms of APSum of n Terms of APSum of n Terms of AP56 mins
Reflection of Light-1Reflection of Light-1Reflection of Light-144 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

What is a solar cLakhmir Singh & Manjit Kaur - Physics

How much solar enLakhmir Singh & Manjit Kaur - Physics

What is a solar cLakhmir Singh & Manjit Kaur - Physics