JEE Main 2014 · 12 Apr · Shift 1 · Physics Q29

PhysicsSingle correct+4 / -1Question 29 of 90

For sky wave propagation, the radio waves must have a frequency range in between :

1 MHz to 2 MHz

5 MHz to 25 MHz

35 MHz to 40 MHz

45 MHz to 50 MHz

Answer and worked solution

Official answer: B

Sky waves rely on ionospheric reflection, which works roughly from a few MHz up to about 30 MHz. Of the options, 5 MHz to 25 MHz.

JEE Main 2014 · 12 Apr · Shift 1, Physics question 29