Spectacles used for viewing 3D films have
1). Bifocal lens
2). Convex lens
3). Concave lens
4). Polaroid's
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1. ?Blue colour of the sky is?consequence of
2. Which of the following is an example of simple harmonic motion?
4. The unit of intensity of electric field is
6. Purity of a metal can be determined with the help of
10. Which one among the following components can not be developed within an ''integrated circuit"?