The image formed by a single concave lent is always real could be real or virtua
ID: 1420545 • Letter: T
Question
The image formed by a single concave lent is always real could be real or virtual but to always teal when the object is placed at the local point. to always inserted to always virtual. could be real or virtual, depending on whether the object distance is smaller or greater than the local length. The critical angle for a beam of light passing from water into air to 48.8 degree. This means that all light rays with an angle of incidence in the water that it greater than 48.8 degree will be totally transmitted. totally reflected. totally absorbed by the water. partially reflected and partially transmitted. Which of following statements about the image formed by a single diverging lens are true? (There could be more than one correct choice.) The image is always smaller than the object. The image is always upright. The image is always inverted. The image is always real. The image is always virtual. When a beam of light originally traveling in air, enters a piece of glass having an index of refraction of 3/2, its speed is reduced to 2/3 its original value. increases by a factor of 3/2. is unaffected. A double-slit interference experiment is performed in the air. Later, the same apparatus is immersed in benzene (which has an index of refraction of 1.50), and the experiment is repeated. When the apparatus is in benzene, you observe that the interference fringes are equally spaced at when the apparatus is in air. more closely spaced than when the apparatus is in air. more widely spaced than when the apparatus it in air. When a light wave enters into a medium of different refractive index, only its speed and frequency change. its speed, frequency, and wavelength change. only its frequency and wavelength change. only its speed and wavelength change.Explanation / Answer
19.
the single concave lens always produce the virtual image. so the option D is correct answer.
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