A plane mirror is placed vertically facing due north. An arrow pointing north-east is kept in front of the mirror. In which direction will the arrow point in this image?
The arrow pointing north-east will have be resultant of two directions- north and east. The horizontal component of arrow facing east will be same on reflection. But the vertical component of arrow facing the plane mirror will be reflected and be reversed. Thus, the image will have an arrow resultant of south and east direction.
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Varun’s mom is finding it difficult to cook in the kitchen as there was power cut and she was complaining about it to Varun. He immediately took a plane mirror from his shelf made it stand against a wall such that sun’s rays were focused into the kitchen directly on the cook top, due to the reflection of the mirror. There was some light now and his mother was able to finish her work.
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