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  • A student covered a torch with 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.

A student covered a torch with 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.

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No, the colour of light will not affect the shadow because the shadow is usually dark when an object obstructs the path of light and hence no light reaches in the shadow region.

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Sumit Saini

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