MEDIUM
10th CBSE
IMPORTANT
Earn 100

Draw a labelled diagram of solar water heater. What modification will be made in the box type solar cooker to enable it to be used as a solar water heater?

Important Questions on Sources of Energy

EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 21
What is the role of a plane mirror and a glass sheet in a solar cooker?
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 22
Mention three advantages of a solar cell?
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 1

What are environmental consequences of increasing demand for energy? What steps would you suggest to reduce energy consumption?

MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 2
Explain how a wooden box with its interior walls painted in black, having a glass lid is able to retain heat inside it.
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 2
With the help of a schematic diagram, describe the working of a solar water heater.
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 3
On what principle does a solar water heater operate? Draw a labelled schematic diagram for a solar water heater. The solar constant at a place is 1.4 kW/m2. How much solar energy will be received at this place per second over an area of  5 m2?
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 4
Name any three forms of energy of the oceans which can be converted into usable energy forms. Describe how it is done in each case. What is the likelihood of their use on a large scale?
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 5 - Sources of Energy>EXERCISE - 5C>Q 5
What are (i) solar concentrators and (ii) solar cell panels? How are they an improvement on simple devices? Why is it that solar cell panels are costly?