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The height of a T. V. tower is 75 m. If we want to double its coverage range, then the height of the T. V. tower should beA. 150 mB. 300 mC. 200 mD. 500 m |
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Answer» Correct Answer - B `d=sqrt(2Rh) therefore d prop sqrth` `d_2/d_1=sqrt(h_2/h_1)` `therefore h_2/h_1=(d_2/d_1)^2=4` `therefore h_2`=75 x 4 = 300 m |
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