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No. Of imageimages

Multiple Images with Plane Mirrors Introduction The number of images formed by two adjacent plane mirrors depends on the angle between the mirror. If  θ  (in degrees) is angle between the plane mirrors then number of images are given by, n=n = 360 θ − 1. We verify this formula in this experiment. Apparatus Two plane mirrors, protractor to measure angle, candle, matchbox. Procedure Take two plane mirrors (without frame). Place both the mirrors side by side and fix the junction where they meet with a cello tape. Now you will be able to open and close the mirrors like a book. Place both the mirrors at a small angle apart in the upright position on the floor. Place a lighted candle in the space between the two mirrors. You will observe many images of the candle which makes a beautiful scene. Now, by gradually decreasing the angle between the mirrors observe the images being formed. You will now observe more and more numbers of images of the candle. Similarly, if the angle between ...
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Class 8 Chapter 11 Time and Work

 Access answers to Maths RD Sharma Solutions For Class 8 Chapter 11 Time and Work 1. Rakesh can do a piece of work in 20 days. How much work can he do in 4 days? Solution: The given details are, Time taken by Rakesh to do a piece of work is 20 days Work done by Rakesh in 1 day = 1/20 Work done by Rakesh in 4 days = 4 × 1/20 = 1/5 ∴ 1/5th work can be done by Rakesh in 4days. 2. Rohan can paint 1/3 of a painting in 6 days. How many days will he take to complete painting? Solution: The given details are, Number of days taken by Rohan for painting 1/3 of painting is 6 days Number of days taken by Rohan to complete the painting = 6/(1/3) = 6 × 3 = 18 ∴ Rohan can complete painting in 18days. 3. Anil can do a piece of work in 5 days and Ankur in 4 days. How long will they take do the same work, if they work together? Solution: The given details are, Anil can do a piece of work in 5 days Work done by Anil in 1 day = 1/5 Ankur can do same work in 4 days Work done by Ankur in 1 day = 1/4 Wor...
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Class 8 Geography Chapter 5 – Industries Chapter 5 Industries

  Class 8 Geography Chapter 5 – Industries Introduction The notebooks that the students use in order to jot down their notes are manufactured after a long process. The journey of this notebook starts from a tree. Those who wish to manufacture paper, cut down the trees and transport it to any pulp mill. At the mill, the wood of trees is processed using machines and gets converted into pulp made of wood. The mill workers mix the pulp with chemicals. The mix is finally converted into paper with the help of machines. These pages are then bound into a notebook, packed well and are sent to stationary shops to be sold.  Class 08th English Lessons Class 08th English MCQ Take Free MCQ Test English Class 08th Science Lessons Take Free MCQ Test Science Class 08th Hindi Lessons Take Free MCQ Test Hindi CBSE CLASS 08th Social Science Lessons Take Free MCQ Test History   Manufacturing or Secondary Activities are the process through which raw materials are converted into products. These...
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