a container is filled with water (refractive indez=1 33)upto a height of 33 25 aconcave mirror is placed - Science - Light - Reflection and Refraction

Question

a container is filled with water (refractive indez=1 33)upto a
height of 33 25 aconcave mirror is placed 15 cm above the water
level and the image of an objplaced at the bottom is formed 25 cm
below the water level the focal length of mirror is?

Neha Gupta · Accepted Answer

Refractive index of water = μ = 1
33Heigh of the concave mirror from the water surface h  = 15 cmDepth of the object inside the water d = 33
25 cmdepth of the image inside the water = i  = 25 cmObject distance from the mirror is uu = h+dμ = -15+33
2551
33 = -40cmv = h+iμ = -15+251
33 =-33
8 cmFocal lengthf = uvu+v= -40×-33
8-40-33 8f = -18 32 cm

a container is filled with water (refractive indez=1.33)upto a height of 33.25 . aconcave mirror is placed 15 cm above the water level and the image of an objplaced at the bottom is formed 25 cm below the water level .the focal length of mirror is?