a. What is shadow?
b. On what factors the shape of the shadow of an object depends.
c. A student covers the torch with a red cellophane sheet to obtain red light. Using the red light, she obtains a shadow of an Opaque object. She repeats this activity with green and blue light. Will the colour of the light affect the shadow? Explain.
Answers
Answer:
1 ) A shadow is a dark (real image) area where light from a light source is blocked by an opaque object
2 ) The size of the shadow depends on the size of the object, the distance from the light to the object and the distance from the light to the screen. A bright point of light
3 ) No, the colour of the light will not affect the shadow because the colour of a screen or the object does not affect the colour of the shadow. A shadow is always dark or black.
Explanation:
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Ans.1) A shadow is a dark (real image) area where light from a light source is blocked by an opaque object. It occupies all of the three-dimensional volume behind an object with light in front of it. The cross section of a shadow is a two-dimensional silhouette, or a reverse projection of the object blocking the light.
Ans.2) The size of the shadow depends on the size of the object, the distance from the light to the object and the distance from the light to the screen. A bright point of light.
Ans.3) No, the colour of the light will not affect the shadow because the colour of a screen or the object does not affect the colour of the shadow. A shadow is always dark or black.
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