Answer:
Solution
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Correct option is
C
3 cm
RI=apparent depthreal depth
Substituting, 34=apparentdepth12
Therefore, apparent depth=412×3=9
The height by which it appears to be raised is 12−9=3cm
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SIMILAR QUESTIONS
A coin is placed at the bottom of a glass tumbler and then water is added. It appeared that the depth of the coin has been reduced because
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A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 up to the same height, by what distance would the microscope have to be moved to focus on the needle again?
Based on the time that the solar system takes to circle the center of the milky way, the length of time that the Tyrannosaurus rex dinosaurs lived is 0.291 galactic years ago.
<h3>How long ago did the Tyrannosaurus rex live?</h3>
The Tyrannosaurus rex lived 67 million years ago.
If a single galactic year is 230 million years then the Tyrannosaurus rex lived:
= Number of years ago Tyrannosaurus rex lived / Number of years in galactic years
Solving gives:
= 67 / 230
= 0.291 galactic years ago
Full question is:
Galactic years. The time the Solar System takes to circle around the center of the Milky Way galaxy, a galactic year, is about 230My. In galactic years, how long ago did the Tyrannosaurus rex dinosaurs live?
Find out more on galactic years at brainly.com/question/13600471
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Answer: work is the pressure acting through the change in volume
Explanation:
In the same way that work is defined as force operating over a distance, work is the pressure acting through the change in volume. Pressure is comparable to force in pressure–volume work, while volume is analogous to distance in the classic definition of work.
It could be the third and the first one.