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 projectile is fired at an angle such that the vertical component of its velocity and the horizontal component of its velocity are both equal to 19 m/s. How long does it ta
A 13 kg bucket of water of is suspended by a rope wrapped around a windlass that is a solid cylinder 0.400 m in diameter with mass 14.0 kg. The cylinder is pivoted on a fric
A person driving her car at 48 km/h approaches an intersection just as the traffic light turns yellow. The yellow light lasts only 2.0 s before turning to red, how far will
Because gasoline is less dense than water, drums containing gasoline will float in water. Find what total volume of steel can be used in making the drum if the gasoline-filled
A 25-ohm resistor, a 55-ohm resistor, and a 75-ohm resistor are connected in parallel and placed across a 9.0-V battery. What is the current through each branch of the circuit
You've been given the task of designing a "water couch"-that one could lie on, floating on a lake, for instance-in the form of a flat rectangular slab made of Styrofoam with
Two large, parallel, conducting plates are 9.7 cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 5.7 x 10-15 N
A series ac circuit contains a 270-\;{\rm{ }}\Omega resistor, a 10.0-\;{\rm mH} inductor, What is the average power delivered to the resistor, to the capacitor, and to the ind
A space vehicle is traveling at 5900 km/h relative to the Earth when the exhausted rocket motor is disengaged and sent backward with a speed of 99 km/h relative to the command
A 1200 kg car is traveling at a constant speed of 13 m/s up a hill that makes a constant angle with the horizontal. How much energy is dissipated by dissipative forces in one
The density of a sphere is given by ρ(r)= C/r. The sphere has a radius of 6.0 m and a mass of 1.3*1011 kg. A small diameter hole is drilled into the sphere toward the center o
An airplane, diving at an angle of 53° with the vertical, releases a projectile at an altitude of 730 m. How far did the projectile travel horizontally during its flight