Question

(a) The magnification produced by a mirror is given by m = What does the magnitude of magnification signify?

(b) In which of the medium is the speed of light highest? Given below the values of refractive index in the brackets, justiCE WERE Kerosene (1.47), Ice (1.31), X, (1.62)​

Answer 1

Answer:

Magnification = height of the image/height of the object = distance of the image/distance of the object.If m has a magnitude greater than 1 the image is larger than the object, and an m with a magnitude less than 1 means the image is smaller than the object.

Now, the refractive index of kerosene, turpentine and water are 1.44, 1.47 and 1.33 respectively. From the above, we can say that the speed of light is maximum in water and minimum in turpentine. So, the correct answer is “Option B”.