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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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CBSE syllabus for class 1 to 12

CBSE Syllabus contains the list of topics and subtopics to be covered in the course of study during an academic year. Syllabus for CBSE includes a summary and list of chapters to be studied during the teaching and learning process in a particular class. Most of the national entrance exam ask questions based on CBSE syllabus. Every year  CBSE  issues the syllabus for class 1 to 12. Right from the basic information to a detailed one, the syllabus contains all the information needed by a student and the teacher. Here we have provided the CBSE curriculum for class 1 to class 12 in a detailed manner for all the subjects. NCERT releases the books which are purely based on the CBSE syllabus. Students are strictly recommended to study from  NCERT Books . To every student, it’s important to know the syllabus at the beginning of the academic session. This will help them in understanding what they have to study in the entire year. Also, they can plan their studies in advance. C...
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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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