Answer the following question:
Why can an X-ray telescope not be based on the earth?

Answer the following questions: What is a ray diagram?

Answer the following questions : State the use of a telescope .

Answer the following question: Why are optical telescope located in uninhabited places on mountains?

Give scientific reasons Chandra telescope cannot be based on the earth.

Study the figure and answer the following question: What type of telescope is shown in the figure?

Questions based on diagram Study the figure and answer the following question What type of telescope is shown in the figure?

Answer the following questions Which coloured ray is the least deviated ?

Answer the following. Write short note on Chandra telescope.

Answer the following questions Which coloured ray is the most deviated ?