Question

A transmitter produces radio waves of wavelength 1500m. It takes the waves 0.025s to travel from transmitter to radio receiver.
What is the distance between the radio transmitter and the receiver?
A) 5 × 10³ m
B) 2 × 10⁵ m
C) 7.5 × 10⁶ m
D) 1.1 × 10¹⁰ m​

Answer 1

Answer:

$7.5 \times 10 {}^{6}$

Explanation:

Speed of electromagnetic waves=

$3 \times 10 {}^{8} ms$

m/s

$= 3 \times 10 {}^{8} ms \times 0.025$

$= 3 \times 10 {}^{8} \times \frac{1}{40}$

$= 7.5 \times 10 {}^{6} m$