Question

A TV tower has a height of 20 m. The maximum distance upto which TV transmission can be received is equal to (radius of earth = $6.4\times {10}^{6}m$)

• A. $4\times {10}^3$ m
• B. $16\times {10}^3$ m
• C. $32\times {10}^6$ m
• D. $64\times {10}^6$ m

Answer 1

The correct option is B $16\times {10}^3$ m

we know that distance d upto which signal can be transmitted

d=√2hR

WHERE,D IS THE DISTANCE OR RANGE

h= height of the tower

R=RADIUS OF EARTH GENERALLY (6.4*10^6)

HENCE PUTTING WE GET

16*10^3 CM ANSWER (OPTION B)