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Question 1:

Which of the following is an example of light energy?

A) A running car
B) A burning candle
C) A stretched rubber band
D) A spinning top

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Explanation: The correct answer is B) A burning candle. Light energy is the energy associated with electromagnetic radiation in the form of visible light. In this case, a burning candle emits light energy in the form of a flame.

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Question 2:

What is radiant energy?

A) The energy of motion
B) The energy associated with temperature
C) The energy associated with electromagnetic waves
D) The energy transferred by electric charges

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Explanation: The correct answer is C) The energy associated with electromagnetic waves. Radiant energy refers to the energy carried by electromagnetic waves, including visible light, radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays.

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Question 3:

Which of the following is true about light energy?

A) It can only be produced by artificial sources
B) It travels only in straight lines
C) It is a form of potential energy
D) It can be absorbed, reflected, or transmitted by objects

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Explanation: The correct answer is D) It can be absorbed, reflected, or transmitted by objects. Light energy interacts with objects in various ways. It can be absorbed by an object, causing it to heat up, reflected off a surface, or transmitted through transparent materials.

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Question 4:

How does light energy travel?

A) Through conduction
B) Through convection
C) Through radiation
D) It cannot travel through empty space

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Explanation: The correct answer is C) Through radiation. Light energy can travel through empty space or vacuum as well as through transparent substances. It propagates in the form of electromagnetic waves that can travel through a medium or empty space.

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Question 5:

Which of the following is an example of the use of light energy in everyday life?

A) Photosynthesis in plants
B) Wind turning a windmill
C) A flowing river turning a waterwheel
D) Sunlight powering solar panels

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Explanation: The correct answer is D) Sunlight powering solar panels. Light energy from the Sun can be harnessed and converted into electrical energy using solar panels. This conversion of light energy to electrical energy is the basis of solar power.