Radio waves do not penetrate in the band of

(B) Haustoria

Given: V1 = 7.5 MHz = 7.5 × 106 Hz, V1 = 12 MHz = 12 × 106 Hz. To find: Wavelength band Formula: λ = \(\frac{c}{v}\) Calculation: From formula, V1 = \(\frac{3\times10^8}{7.5\times10^6}\) = 40 m V1 = \(\frac{3\times10^8}{12\times10^6}\) = 25 m ∴ Wavelength band = 40...

Production: 1. Radio waves are produced by accelerated motion of charges in a conducting wire. The frequency of waves produced by the circuit depends upon the magnitudes of the inductance and...

In communication using radio waves, an antenna in the transmitter radiates the EM waves, which travel through space and reach the receiving antenna at the other end.

Correct option is: (C) sky wave propagation

Correct option is: (A) Frequency .

A. Valence band (V.B): 1. The topmost occupied energy level in an atom is the valence level. The energy band formed by valence energy levels of atoms in a solid is...

Correct option is (D) ₹ 680 Let cost price of radio be Rs x. \(\therefore\) Selling price = x + 10% of x = x + \(\frac{10x}{100}\) = x + \(\frac{x}{10}\) \(=\frac{11x}{10}.\) Given that selling price = Rs 748 \(\therefore\) \(\frac{11x}{10}=748\) \(\Rightarrow\) \(x=\frac{748}{11}\times10=680\) \(\therefore\) Cost price...

Correct answer is (a) Wi-Fi