The intensity of a wave is:
Correct answer: B. Directly proportional to (amplitude)2
- A. Directly proportional to the amplitude
- B. Directly proportional to (amplitude)2
- C. Inversely proportional to amplitude
- D. Inversely proportional to (amplitude)2
Explanation
The intensity of a wave is directly proportional to the square of its amplitude (I∝A2). This means if the amplitude of a wave doubles, the intensity increases by a factor of four. Option B is correct because it accurately reflects this relationship. Option A is incorrect because it implies a linear relationship, which is not the case. Options C and D are incorrect because they suggest that intensity is inversely related to amplitude, which contradicts the fundamental principle of wave physics.
Last updated
Related questions
20 waves pass through a point in a medium in 5 seconds. What is the time required to pass one wave?
A longitudinal wave is moving through a medium. Which of the following statements about the direction of propagation of wave and displacement of the medium is true?
A point source of light placed in a homogeneous medium gives rise to ___________________?
A sound wave has a wavelength of 0.20 m. What is the phase difference between two points along the wave which are 0.65 m apart?
A sound wave has a wavelength of λ. What is the minimum possible distance between two points with a phase difference of 90˚?