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What is the minimum distance needed for an echo?

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The minimum distance required to hear an echo is I/20th part of the magnitude of velocity of sound in air, if the velocity of sound is _________ then the minimum distance required to hear an echo is 17 .2 m.

The minimum distance required to hear an echo is ________

The minimum distance required to hear an echo is ________ part of the magnitude of the velocity of sound in air.

What is Echo?

Two charged particles are placed at a distance 1.0 cm apart. What is the minimum possible magnitude of the electric force acting o each charge?

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SURA PUBLICATION-SELF-EVALUATION TEST 2 MARKS-ANSWER ANY QUESTIONS (BIOLOGY & COMPUTER)
  1. What is the minimum distance needed for an echo?

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  2. What do you understand by the term phenotype and genotype?

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  3. Fill in the blanks: (i) All files are stored in the . (ii) Which i...

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  4. What are the objectives for replacing non-conventional energy resource...

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  5. True or False. If false give the correct statement: (i) Fishes origi...

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  6. What is Geologic time scale.

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  7. How can we contribute to a sustainable world ?

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  8. Write is difference between a file and a folder?

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  9. What will happen if trees are cut down ?

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  10. Fill in blanks: (i) Deforestation leads to in rainfall. (ii) is ...

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  11. Block menu is used to choose the category of blocks.

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  12. What is the role of fat in the cause of atherosclerosis ?

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  13. Arun was playing in the garden. Suddenly he saw a dragon fly sitting o...

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  14. Wrie the uses of 'Note pad' and 'Paint' app.

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  15. A breeder wishes to incorporate desirable characters into the crop pla...

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  16. Fill in the blanks: (i) A highly poisonous chemical derived fromm to...

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  17. Solar energy is a renewable energy. How?

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  18. True or False. If false give the correct statement: (i) Raphano bras...

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  19. What are Okazaki fragments?

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  20. Mention the diseases caused by tobacco smoke.

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  21. Why is Archaeopteryx considered to be a connecting link?

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