Answer:
thermometer is based on the principle of thermal expansion.
The object is farther away then two principles focal lengths from the concave lens
C ,because kinetic energy is stored and there is energy needed for the ball to keep bouncing
The motion of falling objects is the simplest and most common example of motion with changing velocity. The early pioneers of physics had a correct intuition that the way things drop was a message directly from Nature herself about how the universe worked. Other examples seem less likely to have deep significance. A walking person who speeds up is making a conscious choice. If one stretch of a river flows more rapidly than another, it may be only because the channel is narrower there, which is just an accident of the local geography. But there is something impressively consistent, universal, and inexorable about the way things fall.
Answer:
-2.25
Real and inverted image
Explanation:
u = Object distance = 16 cm
v = Image distance = 36 cm
f = Focal length
Lens Equation
![\frac{1}{f}=\frac{1}{u}+\frac{1}{v}\\\Rightarrow \frac{1}{f}=\frac{1}{16}+\frac{1}{36}\\\Rightarrow \frac{1}{f}=\frac{13}{144}\\\Rightarrow f=\frac{144}{13}=11.07\ cm](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bf%7D%3D%5Cfrac%7B1%7D%7Bu%7D%2B%5Cfrac%7B1%7D%7Bv%7D%5C%5C%5CRightarrow%20%5Cfrac%7B1%7D%7Bf%7D%3D%5Cfrac%7B1%7D%7B16%7D%2B%5Cfrac%7B1%7D%7B36%7D%5C%5C%5CRightarrow%20%5Cfrac%7B1%7D%7Bf%7D%3D%5Cfrac%7B13%7D%7B144%7D%5C%5C%5CRightarrow%20f%3D%5Cfrac%7B144%7D%7B13%7D%3D11.07%5C%20cm)
Focal length of the lens is 11.07 cm. Positive value indicates the lens is a convex lens
Magnification
![m=-\frac{v}{u}\\\Rightarrow m=-\frac{36}{16}\\\Rightarrow m=-2.25](https://tex.z-dn.net/?f=m%3D-%5Cfrac%7Bv%7D%7Bu%7D%5C%5C%5CRightarrow%20m%3D-%5Cfrac%7B36%7D%7B16%7D%5C%5C%5CRightarrow%20m%3D-2.25)
Since magnification is negative the image inverted