Explore BrainMass


wavelength produced one more new maxima then other wavelength

1. Light emitted by Element X passes through a diffraction grating having 1200 lines/mm. The diffraction pattern is observed on a screen 75.0 cm behind the grating. Bright fringes are seen on the screen at distances of 56.2 cm, 65.9 cm and 93.5 cm from the central maximum. No other fringes are seen. a) What is the value of "


(See attached file for full problem description) 5. The lens and mirror in Figure P23.51 are separated by 1.00 m and have focal lengths of +80.2 cm and -49.0 cm, respectively. If an object is placed 1.00 m to the left of the lens, locate the final image. State whether the image is upright or inverted, and determine the ov

Spherical Mirror Optics

An insect of height 2 cm is in front of a spherical mirror whose focal length has the absolute value | f | = 40 cm. The insect sees an image of itself that has a height of 0.40 cm and appears upright. 1) Is the image real or virtual? Is it on the same side of the mirror as the insect or the other side? 2) Is the mirror co

Reflection from curved surfaces: Concave and convex mirrors.

This problem deals with lenses, please explain using equations, and ray diagrams. A real object is at the zero end of the meter stick. A large concave mirror at the 100-cm end of a meter stick forms an image of the object at the 70-cm position. A small convex mirror placed at the 20-cm position forms a final image at the 10-c

The reflection of light in mirrors

A concave mirror has a focal length of 30.0 cm. The distance between an object and its image is 45.0 cm. Find the object and image distances, assuming that (a) the object lies beyond the center of curvature and (b) the object lies within the focal point.

Ray tracing with mirror equation

An object with a height of 42 cm is placed 2.0 m in front of a concave mirror with a focal length of 0.50 m. (a) Determine the approximate location and size of the image using a ray diagram. (b) Is the image upright or inverted?

The radius of a curvature

The radius of curvature of a spherical mirror is 32 cm. rays parallel to the axis of the mirror will be brought into focus at a point that is what distance fron the mirror? a. 8.0cm b. 32 cm c. 4.0 cm d. 16cm

Lenses/Radius of Curvature

Hi. Can someone please show me how to do the following problem? Thank you. "When a patient is being fitted with contact lenses, the curvature of the patient's cornea is measured with an instrument known as a keratometer. A lighted object is held near the eye, and the keratometer measures the magnification of the image formed

Cosine and Sine Fourier Transforms

Problem 1: Consider a function f(t) that is zero for t<0 and equals e^-t/2r for t>=0. Find its Cosine and Sine Fourier Transforms A(w) and B(w). Make a nice plot of A(w) and B (w). Find a convenient value of tau. Problem 2: Find the Cosine and Sine Fourier Transforms A(w) and B(w) for the sinusoidal pulse f(t) given by f(t

Mirrors And Lens: Find Position and Magnification

An object is placed 18 cm to the left of a converging lens of focal length 27 cm. A diverging lens of focal length 10 cm is 25 cm to the right of the converging lens. Find the position and magnification of the final image?

Mirrors And Lens

The nickel's image has four times the diameter of the nickel when the lens is 2.70 cm from the nickel. Determine the focal length of the lens?

Angular spread of laser

Calculate the angular spread of a laser beam due to diffraction if the beam emerges through a 2.90mm diameter mirror. Assume that lambda = 686nm.

Calculating angle of incidence

A person stands 3.4m in front of a wall that is covered floor-to-ceiling with a plane mirror. His eyes are 2.0m above the floor. He holds a flashlight between his feet and manages to point it at the mirror. At what angle of incidence must the light strike the mirror so the light will reach his eyes?

Starting a fire with a mirror and sunlight.

Which kind of spherical mirror, concave or convex, can be used to start a fire with sunlight? For the best results, how far from the mirror should the paper to be ignited be placed?

Image formed by a concave mirror

For an image formed by a concave mirror to be a point, the object must be: A) between the principle focus and the mirror B) at the center of curvature C) at an infinite distance D) at the principle focus

Beam of Light Impinges

1.) A woman 1.8m tall, standing 1.24 meters from a 1m high vertical mirror can see her entire image in it. Her eyes are 144 mm below the very top of her head. How high above the floor is the bottom edge of the mirror? 2.) A beam of light impinges on the top surface of a 7.30 cm thick parallel glass (n=1.5) plate at an angle o