1. | wavelength is doubled and frequency becomes half. |
2. | wavelength is halved and frequency remains unchanged. |
3. | wavelength and frequency both remain unchanged. |
4. | wavelength is doubled and frequency unchanged. |
1. | higher in vacuum compared to other media. |
2. | lower in vacuum compared to other media. |
3. | independent of the medium. |
4. | lower in some media than in vacuum, and higher in others. |
List -I (Electromagnetic waves) | List - II (Wavelength) | ||
(a) | AM radio waves | (i) | \(10^{-10}~\text{m}\) |
(b) | Microwaves | (ii) | \(10^{2} ~\text{m}\) |
(c) | Infrared radiation | (iii) | \(10^{-2} ~\text{m}\) |
(d) | \(X\)-rays | (iv) | \(10^{-4} ~\text{m}\) |
(a) | (b) | (c) | (d) | |
1. | (ii) | (iii) | (iv) | (i) |
2. | (iv) | (iii) | (ii) | (i) |
3. | (iii) | (ii) | (i) | (iv) |
4. | (iii) | (iv) | (ii) | (i) |
(A) | a varying sinusoidal current flowing through a capacitor |
(B) | an electric dipole, whose size (and magnitude) is oscillating with time |
(C) | a steady current flowing through a toroid |
1. | only (A) | 2. | only (B) |
3. | only (A) & (B) | 4. | (A), (B), (C) |