Distance between focal plane and lens
Course:- Physics
Reference No.:- EM133812

Assignment Help
Assignment Help >> Physics


A convex lens is a transparent device that uses refraction to twist and focus light from an object, forming a sharp image. We'll first investigate how lens produces an image from a point source of light (a lamp).

Choose Screen at upper right, which makes the object a lamp and gives a black screen that can be dragged around. 

Choose many rays at upper left to see how the lens bends some of the rays of light from the lamp.

With lamp positioned far to the left of the lens, you must see that rays that go through the lens converge to a point. If the screen is placed where beams converge, the image on the screen will be in focus (it will be a small dot of light because that is what the object looks like in this case). The screen is then at focal plane. As the lamp is moved closer to the lens, the distance between focal plane and lens.

Ask Question & Get Answers from Experts
Browse some more (Physics) Materials
A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axel through the center of the disk. the platform has a mass of 15
What are the displacement and velocity of the point on the cord. What is the magnitude of the acceleration of one of the liners toward the other because of their mutual gravit
Two identical waves each having an amplitude 0.02 m has a phase difference of ?/8 when they meet at a point. What is the amplitude of the resultant wave at this point? A strin
A radio station broadcasts at a rate of 89.3 million cyces each second. what is the period of this wave and if the wavelength is 3.359 meters, what is the speed of this radio
a 100 MeV particle decays into two particles. one of these two particles has a mass of 10 MeV and a speed of 3/5. a) what are the mass and speed (in the initial particle res
A 3.00 kg block starts from rest at the top of a 35.5° incline and slides 2.00 m down the incline in 1.30s. Find the acceleration of the block. Discover the frictional force a
A 0.381 H inductor is connected to a capacitor and a 45.5 resistor along with a 69.3 Hertz, 28.3 Volt generator. Find to what value would the capacitor have to be adjusted t
When a certain air-filled parallel-plate capacitor is connected across a battery, it acquires a charge (on each plate) of200 µC. While the battery connection is maintained,