Questions based on paragraph :
One way of classifying stars is on the basis of their temperature . In the order of decreasing temperature , stars are divided into seven main types viz , O ,B,A,F,G,K and M . :
What do you think will be a likely unit of average luminosity ? why ? :

Questions based on paragraph : One way of classifying stars is on the basis of their temperature . In the order of decreasing temperature , stars are divided into seven main types viz , O ,B,A,F,G,K and M . : Which star type would our sun belong ?:

Questions based on paragraph : One way of classifying stars is on the basis of their temperature . In the order of decreasing temperature , stars are divided into seven main types viz , O ,B,A,F,G,K and M . : Do you think , there is a possible dependence of brightness of star on its surface temperature ?:

Questions based on paragraph : One way of classifying stars is on the basis of their temperature . In the order of decreasing temperature , stars are divided into seven main types viz , O ,B,A,F,G,K and M . : Arrange stars types in the increasing order of temperatures at the centre of stars .:

Questions based on Paragraph : Seemas and shobha's mother asked both of them to take out 3 packs of 0.5 L of milk ( all at same temperature ) kept in refigerator and boil it . Seema took 1 l of milk in vessel A and shobha took rest of the milk in vessel B of same size as that of A . both the vessels are made up of same material and kept on the flame of equal intensity : After boiling , what can you say about the temperatures and heat content of the milk in both vessels ? why ?