Electromagnetic Waves questions
212 published questions with worked solutions.
- The electric field in an electromagnetic wave is given by E = 56.5 sin (t − x/c) NC^ -1 . Find the intensity of the wave if it is...
- A signal of 100 THz frequency can be transmitted with maximum efficiency by :
- The oscillating magnetic field in a plane electromagnetic wave is given by B_y = 5 10^ -6 sin 1000 (5x - 4 10^ 8 t) T. The...
- A radio can tune to any station in 6 MHz to 10 MHz band. The value of corresponding wavelength bandwidth will be
- The magnetic field of a plane electromagnetic wave is given by B = 2 10^ -8 (0.5 10^ 3 x + 1.5 10^ 11 t) j T. The amplitude of...
- Which is the correct ascending order of wavelengths?
- If electric field intensity of a uniform plane electro magnetic wave is given as E = −301.6 (kz - t) a _ x + 452.4 (kz - t) a _ y...
- In free space, an electromagnetic wave of 3 GHz frequency strikes over the edge of an object of size /100, where is the...
- The ratio of average electric energy density and total average energy density of electromagnetic wave is
- Which of the following frequencies does not belong to FM broadcast.
- Match List I with List II List-I: (A) Microwaves (B) Gamma rays (C) Radio waves (D) X-rays List-II: (I) Radio active decay of the...
- The energy density associated with electric field E and magnetic field B of an electronmagnetic wave in free space is given by (...
- Which one of the following waves is used for detecting forgery in currency notes ?
- Which one among the following waves carries the maximum energy per photon ?
- Which of the following statements about electromagnetic waves, sound waves and water waves is/are correct ? 1. They exhibit...
- Radiations coming from the Sun are mostly in the form of
- Which of the following are the characteristics of electromagnetic waves ? 1. They are elastic waves. 2. They can also move in...
- Which one of the following types of radiations has the smallest wavelength ?
- Which one of the following wavelengths corresponds to the wavelength of X-rays?
- Which one of the following radiations has longer wavelength ?
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