Physics - Heat & Thermo Question with Solution | TestHub

You are the programme director in ISRO (Indian Space Research Organisation), studying a ground-based laser defence against incoming ICBMs. A CO2 laser delivers 50 W in a 1 mm diameter beam. It is fired from 10 km away, losing 3% intensity per kilometre. The missile's aluminium skin is 3 cm thick and starts at -50°C. It must reach its boiling point of 2600°C. Aluminium has density 2.4 g/cm³ and heat capacity 0.9 J/(g°C).