Compare the values for (a) and (b) above and explain any similarities or differences
What is the name of the mathematical relationship between
,
and
?
Write a conclusion for this part of the investigation.
Drawing Ray Diagrams for Converging Lenses
Ray diagrams are normally drawn using three rays. The three rays are labelled
,
and
. The ray diagrams that follow will use this naming convention.
The first ray (
) travels from the object to the lens
parallel to the principal axis. This ray is bent by the lens and travels through the
focal point .
Any ray travelling parallel to the principal axis is bent through the focal point.
If a light ray passes through a focal point
before it enters the lens, then it will leave the lens
parallel to the principal axis. The second ray (
) is therefore drawn to pass through the focal point before it enters the lens.
A ray that travels through the centre of the lens does not change direction. The third ray (
) is drawn through the centre of the lens.
The point where all three of the rays (
,
and
) intersect is the
image of the point where they all started. The image will form at this point.
In ray diagrams, lenses are drawn like this:
Convex lens:
Concave lens:
CASE 1: Object placed at a distance greater than
From the lens
We can locate the position of the image by drawing our three rays.
travels from the object to the lens parallel to the principal axis, is bent by the lens and then travels through the focal point.
passes through the focal point before it enters the lens and therefore must leave the lens parallel to the principal axis.
travels through the center of the lens and does not change direction. The point where
,
and
intersect is the image of the point where they all started.
The image of an object placed at a distance greater than
from the lens is upside down or
inverted . This is because the rays which began at the top of the object,
above the principal axis, after passing through the lens end up
below the principal axis. The image is called a
real image because it is on the opposite side of the lens to the object and you can trace all the light rays directly from the image back to the object.
The image is also smaller than the object and is located closer to the lens than the object.
In reality, light rays come from
all points along the length of the object. In ray diagrams we only draw three rays (all starting at the top of the object) to keep the diagram clear and simple.
Questions & Answers
Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you.
Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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