Which one of the following wave does not transmit energy?
Correct answer: B. Standing wave
- A. Mechanical wave
- B. Standing wave
- C. Matter wave
- D. Electromagnetic wave
Explanation
(A) Option 1: Mechanical wave. Mechanical waves, like sound waves and water waves, do transmit energy. When a disturbance occurs in a medium, it causes particles to oscillate, transferring energy from one point to another.(B) Option 2: Standing wave. Unlike the other options, standing waves do not transmit energy. They are formed by the superposition of two waves traveling in opposite directions, resulting in regions of constructive and destructive interference. The energy of the wave appears to be "standing still" and does not propagate through space.(C) Option 3: Matter wave. Matter waves, also known as de Broglie waves, are associated with particles, such as electrons or atoms. These waves do transmit energy and are used to describe the wave-like behavior of particles.(D) Option 4: Electromagnetic wave. Electromagnetic waves, like light waves and radio waves, do transmit energy. They consist of oscillating electric and magnetic fields that propagate through space.So, to summarize, the correct answer is (b) standing wave. Standing waves do not transmit energy, unlike mechanical waves, matter waves, and electromagnetic waves.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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