Question Answers
Sahay Sir > Question Answers
7. The enrolment in a school during six consecutive years was as follows: 1555, 1670, 1750, 2013, 2540, 2820 Find the mean enrolment of the school for this period.
07
Oct
7. The enrolment in a school during six consecutive years was as follows: 1555, 1670, 1750, 2013, 2540, 2820 Find the mean enrolment of the school for this period. 1670 1750 2013 2540 2820 Find the mean enrolment of the school for this period. 7. The enrolment in a school during six consecutive years was [...]
A candle is placed 15 cm in front of a lens. If the image of the candle captured on a screen is magnified two times, calculate the focal length and nature of the lens.
07
Oct
A candle is placed 15 cm in front of a lens. If the image of the candle captured on a screen is magnified two times, calculate the focal length and nature of the lens. A candle is placed 15 cm in front of a lens. If the image of the candle captured on a screen [...]
6. The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (iii) Mean marks obtained by the group.
07
Oct
6. The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (iii) Mean marks obtained by the group. 39 48 56 6. The marks (out of 100) obtained by a group of students in a science [...]
A converging bundle of rays is intercepted by a biconcave lens. The radii of curvature of both surfaces are 20 cm and the refractive index of the material of the lens is 1.5. If the rays
07
Oct
A converging bundle of rays is intercepted by a biconcave lens. The radii of curvature of both surfaces are 20 cm and the refractive index of the material of the lens is 1.5. If the rays A converging bundle of rays is intercepted by a biconcave lens. The radii of curvature of both surfaces are [...]
A biconvex lens has radii of curvature 20 cm and 40 cm. The refractive index of the material of the lens is 1.5. An object is placed 40 cm in front of the lens. Calculate the position
07
Oct
A biconvex lens has radii of curvature 20 cm and 40 cm. The refractive index of the material of the lens is 1.5. An object is placed 40 cm in front of the lens. Calculate the position A biconvex lens has radii of curvature 20 cm and 40 cm. The refractive index of the material [...]
6. The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (ii) Range of the marks obtained.
07
Oct
6. The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (ii) Range of the marks obtained. 39 48 56 6. The marks (out of 100) obtained by a group of students in a science test [...]
If in the previous example, we use a diverging lens with a focal length 10.0 cm to form an image of the pencil kept 15 cm in front of the lens, locate and characterize the image.
07
Oct
If in the previous example, we use a diverging lens with a focal length 10.0 cm to form an image of the pencil kept 15 cm in front of the lens, locate and characterize the image. If in the previous example locate and characterize the image. we use a diverging lens with a focal length [...]
6. The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (i) Highest and the lowest marks obtained by the students.
07
Oct
6. The marks (out of 100) obtained by a group of students in a science test are 85, 76, 90, 85, 39, 48, 56, 95, 81 and 75. Find the: (i) Highest and the lowest marks obtained by the students. 39 48 56 6. The marks (out of 100) obtained by a group of students [...]
Now answer the following questions: (iv) Who is the best performer?
07
Oct
Now answer the following questions: (iv) Who is the best performer? Now answer the following questions: (iv) Who is the best performer? October 7, 2020 Category: Chapter 3 - Data Handling , Maths , NCERT Class 7 ,
Now answer the following questions: (iii) B played in all the four games. How would you find the mean?
07
Oct
Now answer the following questions: (iii) B played in all the four games. How would you find the mean? Now answer the following questions: (iii) B played in all the four games. How would you find the mean? October 7, 2020 Category: Chapter 3 - Data Handling , Maths , NCERT Class 7 ,