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What is the focal length of sunglass?...

What is the focal length of sunglass?

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`+1D`

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`-1D`

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UNITED BOOK HOUSE-MODEL PAPER SET-18-EXERCISE
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  2. For any trarisister alpha = 0.96, what is the value of its beta?—

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  18. Draw the diagram of a NAND gate. Write its Truth Table.

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  20. 1BOT = Joule?

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