Which mirror is used as rear view mirror in vehicles?
Convex mirror is used as rear view mirror in vehicles. Because the image is smaller, more image can fit onto the mirror, so a convex mirror provides for a larger field of view than a plane mirror. This is why they are useful.
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What is the length of the arc whose central angle is 30° and radius of the circle is 21 cm?
Which type of radiation has the lowest penetrating ability?
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In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.
Fanatical and uncompromising pursuit of ideals
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A feeling of intense longing for something
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