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d. On what basis and how will you determine whether air is saturated with vapour or not?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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c. Explain the role of latent heat in the change of state of a substances?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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b Which principle is used to measure the specific heat capacity of a substance?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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a. What is meant by latent heat? How will the state of matter transform if latent heat is given off?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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c. In cold regions in winter, the rocks crack due to anomalous expansion of water.

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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b. How can you relate the formation of water droplets on the outer surface of a bottle taken out of refrigerator with formation of dew?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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a. What is the role of anomalous behaviour of water in preserving aquatic life in regions of cold climate?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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Explain the following temperature versus time graph.

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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While deciding the unit for heat, which temperatures interval is chosen? Why?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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What is meant by specific heat capacity? How will you prove experimentally that different substances have different specific heat capacities?

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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2. Observe the following graph. Considering the change in volume of water as its temperature is raised from 0 o C,

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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1. Fill in the blanks and rewrite the sentence.

asked Sep 27, 2021 in Chapter 5: Heat by Doubtly (98.9k points)

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11. Identify the figures and explain their use.

asked Sep 27, 2021 in Chapter 4: Effects of electric current by Doubtly (98.9k points)

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Name the following diagrams and explain the concept behind them.

asked Sep 27, 2021 in Chapter 4: Effects of electric current by Doubtly (98.9k points)

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What is a solenoid? Compare the magnetic field produced by a solenoid with the magnetic field of a bar magnet. Draw neat figures and name various components.

asked Sep 27, 2021 in Chapter 4: Effects of electric current by Doubtly (98.9k points)

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Which of the statement given below correctly describes the magnetic field near a long, straight current carrying conductor?

asked Sep 27, 2021 in Chapter 4: Effects of electric current by Doubtly (98.9k points)

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Video Lecture on Kepler's law

asked Sep 27, 2021 in Lecture by Doubtly (98.9k points)

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In practice the unit kWh is used for the measurement of electrical energy, rather than joule.

asked Sep 26, 2021 in Chapter 4: Effects of electric current by Doubtly (98.9k points)

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For electric power transmission, copper or aluminium wire is used.

asked Sep 26, 2021 in Chapter 4: Effects of electric current by Doubtly (98.9k points)

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In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster etc. an alloy such as Nichrome is used, not pure metals

asked Sep 26, 2021 in Chapter 4: Effects of electric current by Doubtly (98.9k points)

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