Answer:
Explanation:
For image formation in objective lens
object distance u = 14 +1 = 15 mm
focal length f = 14 mm .
image distance v = ?
lens formula
![\frac{1}{v} -\frac{1}{u} =\frac{1}{f}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bv%7D%20-%5Cfrac%7B1%7D%7Bu%7D%20%3D%5Cfrac%7B1%7D%7Bf%7D)
Putting the values
![\frac{1}{v} +\frac{1}{15} =\frac{1}{14}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bv%7D%20%2B%5Cfrac%7B1%7D%7B15%7D%20%3D%5Cfrac%7B1%7D%7B14%7D)
v = 210 mm .
B )
magnification = v / u
= 210 / 15
= 14
size of image = 14 x 1.1 mm
= 15.4 mm
= 15 mm approx
C )
For final image to be at infinity , image produced by objective lens must fall at the focal point of eye piece . so objective lens's distance from the image formed by objective must be equal to focal length of eye piece that is 21 mm .
21 mm is the answer .
D )
overall magnification =
![\frac{210}{15} \times \frac{D}{f_e}](https://tex.z-dn.net/?f=%5Cfrac%7B210%7D%7B15%7D%20%5Ctimes%20%5Cfrac%7BD%7D%7Bf_e%7D)
D = 25 cm , f_e = focal length of eye piece
= 14 x 250 / 21
= 166.67
= 170 ( in two significant figures )
The force of attraction between two objects Mass and distance.
<h3>What is newton's law of gravitation?</h3>
Every particle in the cosmos attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres, according to Newton's law of universal gravitation.
Inductive reasoning, as described by Isaac Newton, was used to deduce this general physical law from actual facts. It was created by Newton and is a component of classical mechanics. Philosophiae Naturalis Principia Mathematica, also known as "the Principia," was originally published on July 5, 1687. In April 1686, when Newton gave Book 1 of the unpublished book to the Royal Society, Robert Hooke said that Newton had learned the inverse square law from him.
According to the law, every point mass attracts every other point mass when a force applies along the line that intersects the two points, in today's parlance. The force is inversely equal to the square of the separation between the masses and directly proportional to their product.
![F = G\frac{m_{1} m_{2}}{r^{2} }](https://tex.z-dn.net/?f=F%20%3D%20G%5Cfrac%7Bm_%7B1%7D%20m_%7B2%7D%7D%7Br%5E%7B2%7D%20%20%7D)
to learn more about newton's law of gravitation go to - brainly.com/question/9373839
#SPJ4
With another person on student A’s side. I’m sorry if I wasn’t able to help. Im trying my best from the information given. :)
You can write an hypothesis such as this:
The weight of an object has effects on the operating frictional force, the greater the weight, the higher the operating frictional force.
The father is the one with the higher weight while the son has the lower weight. The operating frictional force is the friction that their weights exert.
[ Answer ]
True
[ Explanation ]
Any exercise that has very hight intensity or puts you at your maximum level of exertion is an example of anaerobic exercising. Anaerobic exercise is suppose to help you gain muscle and lose un-needed weight. Anaerobic means "without oxygen." This is when your breathing is so intense you have a few intense deep breaths of air but very little breaths in all. This will happen when lifting weights, running, or sprinting up the stairs.
<> Arsenal <>