The condition/s for total internal reflection. a. The incident medium must have

Question

The condition/s for total internal reflection. a. The incident medium must have a lower index of refraction than that of the other refracting medium and the angle of incidence must be greater than the critical angle. b. The angle of incidence must be less than the critical angle c. The incident medium must have a higher index of refraction than that of the other refracting medium and the angle of incidence must be greater than the critical angle A converging lens can produce a) a real image only b) a virtual image only c) both real and virtual images A diverging mirror always produces a) a real, diminished, upright image b) a virtual, diminished, inverted image c) a virtual, diminished, upright image d) a real, diminished, inverted image

Explanation / Answer

10. Here the conditions for total internal reflection is

(a) The incident medium must have a lower index of refraction than that of the other refracting medium and the angle of incidence must be greater than the critical angle.

11. A converging lens can produce

  (b) a virtual image only

virtual image is observed only when light rays originate from a point on one side of lens are refracted by the lens so that they diverge from other side of the lens.This happens when object is closer to the lens than the focal length.

12. A diverging mirror always produce

(c) a virtual,diminished,upright image.

Rays of light that pass through the lens are diverge. Here the image formed will be in a virtual,diminished and upright image.

  

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