PHYSICS PAPER 31 HELPP

[oahmed64]

guys what was the answer for the two questions in physics paper 31 that asked about why heat lost from the double glassed tube by radiation and conduction low?

 

[oahmed64]

is it correct to say that the heat lost as radiation is low as the vacuum acts as an insulator and that heat lost by conduction is low as the distance the heat needs to travel is long as the tube is double glassed?

 

[m3dchemist]

is it correct to say that the heat lost as radiation is low as the vacuum acts as an insulator and that heat lost by conduction is low as the distance the heat needs to travel is long as the tube is double glassed?

rate of conduction was prevented by vacuum and glass was an insulator .. wacuum is not an insulator .. man ...
moreover silvering was the answer to the radiation opart

 

[deathroad96]

how many marks it was

 

[m3dchemist]

how many marks it was

3

 

[Hazooba]

Guys what was the answer for the first page calculations how were we supposed to solve it ??

 

[deathroad96]

what u except for an A in paper 3