Optical and radio telescopes are built on the ground but X-ray astronomy is possible only from a satellite orbiting the earth, why?

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Solution

The visible radiations and radio waves can penetrate the earth's atmosphere but X-rays are absorbed by the atmosphere. That's why Optical and radio telescopes are built on the ground but X-ray astronomy is possible only from a satellite orbiting the earth.

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Similar questions

Q. Assertion :X-ray astronomy is possible only from satellites orbiting the earth. Reason: Efficiency of X-rays telescope is large as compared to any other telescope.

Answer the following questions:

(a) Long distance radio broadcasts use short-wave bands. Why?

(b) It is necessary to use satellites for long distance TV transmission. Why?

(c) Optical and radio telescopes are built on the ground but X-ray astronomy is possible only from satellites orbiting the earth. Why?

(d) The small ozone layer on top of the stratosphere is crucial for human survival. Why?

(e) If the earth did not have an atmosphere, would its average surface temperature be higher or lower than what it is now?

(f) Some scientists have predicted that a global nuclear war on the earth would be followed by a severe ‘nuclear winter’ with a devastating effect on life on earth. What might be the basis of this prediction?

Q. Answer the following questions: (a) Long distance radio broadcasts use short-wave bands. Why? (b) It is necessary to use satellites for long distance TV transmission. Why? (c) Optical and radiotelescopes are built on the ground but X-ray astronomy is possible only from satellites orbiting the earth.Why? (d) The small ozone layer on top of the stratosphere is crucial for human survival. Why? (e) If the earth did not have an atmosphere, would its average surface temperature be higher or lower than what it is now? (f ) Some scientists have predicted that a global nuclear war on the earth would be followed by a severe ‘nuclear winter’ with a devastating effect on life on earth. What might be the basis of this prediction?

Answer the following questions.

a. Explain the construction of Galileo’s telescope.

b. Explain the construction of a radio telescope.

c. Why are optical telescopes located in uninhabited places on mountains?

d. Why can an X-ray telescope not be based on the earth?

Form pairs

‘A’ Groups ‘B’ Groups

(i) X-rays (a) GMRT

(ii) Optical Telescope (b) ISRO

(iii) Indian radio (c) Hubble telescope

(iv) Launching (d) Chandra

artificial satellites

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