The electric field of an electromagnetic wave propagating through a vacuum Is given by: E = 250 sin (2nx1012¢ –n × 10*z)î en V/m. d. The intensity of the radiation it carries e. The energy in eV that it transports through a square surface of 40 cm sideways for half an hour.
Q: 1) FOCAL LENGTH OF THE LENS - USING LENS EQUATION: (a) Table 1: Calculate the focal length using the…
A: 1/u. 1/v 0.0714. 0.0281 0.0526 0.0453 0.0416 0.0571…
Q: Define 1 dioptre of power of a lens.
A: Power of a lens is its ability to converge rays of light falling on it. Diopter is the unit of…
Q: What happens to the image distance as the object distance gets larger? The image distance also get…
A: According to the lens formula, 1/f = 1/v - 1/u where, f = focal length of the lens u = object…
Q: If an object is placed on the focal point in front of a convex lens, what type of image will be…
A: Ray diagram when an object is placed on the focal point in front of a convex lens is shown in image:…
Q: PA
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Q: An object is located 26.0 cm from a concave lens with f = -14.0 cm. What is the image distance?
A: Given,object distance, u = 26.0 cmdocal length of the concave lens, f = -14.0 cm
Q: Give two use each of a concave and a convex mirror.
A: Convex mirror In vehicles side view mirrors. It is used for surveillance at supermarkets and…
Q: Rays entering a lens parallel to each other a) intersect each other at a point lying in the image…
A:
Q: 9. What is the magnitude and direction of the resultant in the sketch below? 9. $3 90 12 15 37
A:
Q: A ray of light is incident normally on a plane mirror. The value of angle of reflection will be a)…
A: Incident angle is the angle that it makes with the normal drawn on the plane of incident. When the…
Q: A concave mirror of focal length 17.5 cm forms a real image 24.8 cm from the mirror. What is the…
A:
Q: The power of a convex lens is 25D. Its focal length becomes O a. O b. O c. O d. 4cm 4m 0.04m - 4m 1
A: We can say,Convex (Converging) lenses have positive focal lengths,they have positive power values.We…
Q: The impression of an image persists on the retina for about _________ of a second. A) 1/10th B)…
A: The image formed on the retina rests for 1/16 th of a second. It is called persistence of vision.
Q: a candle is 3 meters from a thin lens with a focal length of 2 m, find the image distance…
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Q: A 10-cm tall object is positioned 20 cm from a spherical convex mirror with a radius of curvature…
A: Radius of curvature of convex mirror is Height of object is Object is placed 20 cm from the mirror.
Q: 12. As shown in the figure below, an object is placed in front of a convex mirror. At what position…
A: Given Mirror is convex In convex mirror image formed is always virtual , behind the mirror and…
Q: Give at least 10 examples of concave and convex mirror (with pictures)
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Q: Calculate the focal length of a concave mirror when object distance is 5cm and magnification is -6
A: Given that the the object distance of concave mirror and also given the value of magnification. Then…
Q: A concave lens a) Converges light rays b) Diverges light rays c) Form real images always d) Always…
A: Concave lens is the lens that is formed by the 2 inward curve lenses.
Q: How do you determine the focal length of both a convex and concave lens?
A: Convex lens: An optical lens is generally made up of two spherical surfaces. If those…
Q: The circuit shown below is in a uniform magnetic field that is into the page. The current in the…
A: Given: Current,I=1.2×10-1AResistance,R=10ΩPotential Difference Terminal,VT=4VSide,a=12cm=12×10-2m…
Q: What are 3 types of mirrors?
A: There are three types of mirror 1. Plane mirror 2. Concave mirror 3. Convex mirror
Q: Where would the image of a car be formed if it were placed 6.65 m away from a converging lens that…
A: Here we used mirror formula, 1/f = 1/u + 1/v Here, f =0.61m, u =6.65 m Now , 1/0.61 - 1/ 6.65 = 1/v…
Q: Calculate the image distance in centimeters when an object is placed 5 cm away from a convex mirror…
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Q: The image of a bird is formed by a concave spherical mirror on a screen away 100 cm if the bird is…
A: The mirror equation is given by, 1/u + 1/v = 2/R u is object distance from the mirror, and v is…
Q: In what way is an image formed by a mirror inverted? From top to bottom By refraction…
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Q: Explain what a lens does.
A: The lens operation is explained as below,
Q: we are given a convex lens of focal length 20cm.draw ray duagrams to show the nature size and…
A: Given: The focal length of the lens is 20 cm. The distance of the object from the lens is 55 cm.
Q: If the magnification of an image formed by a concave mirror is negative, the image must be Group…
A: Required : If the magnification of an image formed by a concave mirror is negative, the image must…
Q: Why does a pencil when placed in a glass of water appears cut
A: Refraction is defined as the bending of waves when they pass through some other medium. Light,…
Q: A ____________________ takes a small object and makes a large, real, inverted image of it.
A: Concave mirror and Convex lens makes large real and inverted image of object
Q: What happens to the image distance in the normal human eye when we decrease the distance of an…
A: we need to discuss what happens when the object distance changes .
Q: The object is between the center of curvature and focal point with the height of 4.5mm. Identify the…
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Q: 1. Using the principal rays find the position and size of the image, when the object is located at…
A: a When the object is located in between two focal points, f and 2f, the image will be located beyond…
Q: Collimated light passing through a positive lens from the left will O a. come to focus at the focal…
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Q: A boy runs towards a mirror at a speed 10 m/s The speed of the image relative to the man is.
A: Speed of the boy towards the mirror is 10 m/s. The image will also run at the same speed. So, the…
Q: If you move the convex lens away from the object. What happen to the image as you move to a distance…
A: Ques:1.If you move the convex lens away from the object. What happen to the image ? 2.How far was…
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