A concave mirror produces 3 times magnified real image of an object placed at 10 cm in front of it. Where is the image located?

31 How is critical angle related to the refractive index of the medium? 32 The refractive index of dense flint glass is 1.65, and for alcohol it is 1.36, with respect to air. What is the refractive index of dense flint glass with respect to alcohol? 34 With the help of labelled ray diagram only show the formation of an image in a compound microscope. 35 Two thin lenses of power +3.5 D and –2.5 D are placed in contact. Find the power and focal length of the lens combination.