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Look at the picture of the thermos flask...

Look at the picture of the thermos flask and answer the following question

What is the role of silver coating on the outer wall in the flask?

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ICSE-MODEL TEST PAPER 2-SECTION II
  1. State two differences between a real image and a virtual image.

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  2. In the figure given the angle between incident ray and the reflected r...

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  3. In the figure given the angle between incident ray and the reflected r...

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  4. In the figure given the angle between incident ray and the reflected r...

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  5. Fill in the blanks using what you have learnt on addition of colours ...

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  6. Fill in the blanks using what you have learnt on addition of colours ...

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  7. What are the two reference points of a thermometer scale?

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  8. What phase change happen when water vapour becomes frost?

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  9. Mud houses are coller in summer and water in winter because

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  10. State difference between boiling and evaporation.

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  11. Look at the picture of the thermos flask and answer the following ques...

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  12. Look at the picture of the thermos flask and answer the following ques...

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  13. Look at the picture of the thermos flask and answer the following ques...

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  14. Look at the picture of the thermos flask and answer the following ques...

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  15. The time period of a vibrating body is 0.020. What is its frequency?

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  16. What is a sonar?

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  17. A boy fires a gun and another boy at a distance of 1360 m hears the so...

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  18. How will you test whether a given rod is a magnet or not?

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  19. State two differences between an electromagnet and a permanent magnet.

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  20. In the following figures, the bulbs in Figure A and D glow, but the bu...

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