Radio telescope is made up of one or more dishes of shape.
- Aspherical
- Bhyperbolic
- ✓parabolic
- Dhexagonal
Answer: C.
View full solution →Question types
Observing Space: Telescopes question types
40 questions across 8 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
40
Questions
8
Question groups
5
Question types
01
Write the Correct Alternative.
9 Q→02Answer the following in one sentece.
5 Q→03Answer the following questions in detail.
2 Q→04Answer the following question.
9 Q→05Answer the following question.
6 Q→06Fill In The Blanks.
5 Q→07Match The Columns/pair.
3 Q→08Observe The Picture And Explain.
1 Q→Sample Questions
Observing Space: Telescopes questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The images formed by lenses have errors of colours. This is called
- Achromatic disruption
- ✓chromatic aberration
- Cchromatic reflection
- Dchromatic reaction
Answer: B.
View full solution →To collect the maximum amount of light coming from an object, the objective lens should be made as as possible.
- ✓large
- Bsmall
- Ccircular
- Dflat
Answer: A.
View full solution →Visible light coming from heavenly bodies have to pass through the to reach the earth surface.
- Astratosphere
- Btroposphere
- ✓atmosphere
- Dbiosphere
Answer: C.
View full solution →Giant Meterwave Radio Telescope (GMRT) has been erected at near Pune.
- AAsangaon
- BTalegaon
- ✓Narayangaon
- DBhategaon
Answer: C.
View full solution →Define : Radio telescopes
Define : Refracting Telescopes
Define : Optical telescopes
Define : Reflecting Telescope
Define : Visible radiation
What is the difference between sky and space?
What is meant by space observation? Why is it important?
What is the purpose of launching X-Ray telescope Chandra?
What are the two types of reflecting telescopes?
How does a radio telescope work?
What are the difficulties in using refracting telescopes?
How do refracting telescopes work?
Which type of telescopes can be made using a concave mirror, convex mirror, plane mirror, and a lens? Draw diagrams of these telescopes.
What are the difficulties in using ground-based optical telescopes? How are they overcome?
What is the specialty of the artificial satellite Astrosat?
State some of the satellites and their uses.
Write short note : GMRT
The biggest optical telescope in India is situated at …………………..…. .
The first scientist to use a telescope for space observations …………………..…. .
A certain X-ray telescope is named after scientist …………………..…. .
GMRT is used for …………………..….. waves.
The wavelength of visible light is between …………………..….. and …………………..…. .
| Column ‘A’ | Column ‘B’ |
| (1) Micro waves | (a) 800 nm – 0.3mm |
| (2) Infrared waves | (b) 360 pm – 400 nm |
| (3) Visible light rays | (c) 3 pm – 300 pm |
| (4) Ultraviolet rays | (d) 400 nm – 800nm |
| (5) X-rays | (e) 0.3 mm -20cm |
| Column ‘A’ | Column ‘B’ |
| (1) X-rays | (a) GMRT |
| (2) Optical telescope | (b) ISRO |
| (3) Indian radio telescope | (c) Hubble |
| (4) Launching artificial satellite | (d) Chandra |
| (5) Radio waves | (e) telecommunication |
| (6) INSAT and GSAT | (f) longer than 20cm |
| Column ‘A’ | Column ‘B’ |
| (1) X-rays | (a) GMRT |
| (2) Optical telescope | (b) ISRO |
| (3) Indian radio telescope | (c) Hubble |
| (4) Launching artificial-satellite | (d) Chandra |
a. What type of telescope is shown in the figure?
b. Label the main parts of the telescope.
c. Which type of mirror does the telescope use?
d. What other type of telescope uses a curved mirror?
e. Explain the working of the above telescope.
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