a concave mirror of focal length 10cm dipped in water if it's refractive index is 4/3 and s is in the principal axis find the final image formed
Answers
Answer:
12th
Physics
Ray Optics and Optical Instruments
Combination of Lenses
The convex surface of a thi...
PHYSICS
The convex surface of a thin concavo-convex lens of glass of refractive index 1.5 has a radius of curvature 20 cm. The concave surface has a radius of curvature 60 cm. The convex side is silvered and placed on a horizontal surface.
If the concave part is filled with water of refractive index 4/3, find the distance through which the pin should be moved so that the image of the pin again coincides with the pin?
160946
HARD
Share
Study later
ANSWER
For refraction from the first surface,
v
1
3
4
−
−x
1
=
∞
3
4
For refraction through the second surface,
v
2
2
3
−
v
1
3
4
=
−60
2
3
−
3
4
For the final image to form on the object itself, the image from this refraction should be at the center of curvature of the concave mirror.
Thus, v
2
=−20cm
Solving the above equations gives-
x=13.85cm
Thus the pin should be moved 1.15 cm down.
Answer:
Hope it helps
Step-by-step explanation:
