If the height of TV tower is increased by 21 % , then the transmission range is enhanced by

Step-by-step solution

Range = 2 R h ⇒ Range ∝ h Here h increases to 1.21 h ∴ Enhancement range ∝ 1.21 1 2 = 1.1 ∴ Increase = 1.1 - 1 = 0.10 ∴ % increase = 0.10 × 100 = 10 %