9th
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- What are the difficulties in using ground based optical telescopes? How are they overcome? The difficulties faced in using ground based telescopes due to which it does not make good quality observations are: Intensity of light rays... 1
- Column ‘A’ Column ‘B’ (1) X-rays (a) GMRT (2) Optical telescope (b) ISRO (3) Indian radio telescope (c) Hubble ‘A’ Groups ‘B’ Groups (i) X-rays (d) Chandra (ii) Optical telescope (c) Hubble telescope (iii) Indian radio (a) GMRT (iv) Launching artifici... 1
- Fill in the blanks with the proper words. a. The wavelength of visible light is between a. The wavelength of visible light is between 400 nm and 800 nm. b. GMRT is used for radio waves. c. A certain X-ray telescope is named afte... 1