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4.The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area.
09
Oct
4.The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area. 4.The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm find its breadth. Also find the area. October 9, 2020 Category: Chapter 11 - Perimeter and Area , [...]
3.Find the breadth of a rectangular plot of land, if its area is 440 m^2 and the length is 22 m. Also find its perimeter.
09
Oct
3.Find the breadth of a rectangular plot of land, if its area is 440 m^2 and the length is 22 m. Also find its perimeter. 3.Find the breadth of a rectangular plot of land if its area is 440 m^2 and the length is 22 m. Also find its perimeter. October 9, 2020 Category: Chapter [...]
A convex lens forms a real image of an object with magnification 0.5. If the object is displaced by 20 cm along the principal axis, a real image equal to the size of the object is formed
09
Oct
A convex lens forms a real image of an object with magnification 0.5. If the object is displaced by 20 cm along the principal axis, a real image equal to the size of the object is formed A convex lens forms a real image of an object with magnification 0.5. If the object is displaced [...]
A convex lens forms an image of an object on a screen. The height of the image is 9 cm. The lens is now displaced until an image is again obtained on the screen. The height
09
Oct
A convex lens forms an image of an object on a screen. The height of the image is 9 cm. The lens is now displaced until an image is again obtained on the screen. The height A convex lens forms an image of an object on a screen. The height of the image is 9 [...]
2.Find the area of a square park whose perimeter is 320 m.
09
Oct
2.Find the area of a square park whose perimeter is 320 m. 2.Find the area of a square park whose perimeter is 320 m. October 9, 2020 Category: Chapter 11 - Perimeter and Area , Maths , NCERT Class 7 ,
A convex lens is placed in the XYZ coordinate system such that its optical centre is at the origin and principal axis is along the x axis. The focal length of the lens is 20 cm. A point
09
Oct
A convex lens is placed in the XYZ coordinate system such that its optical centre is at the origin and principal axis is along the x axis. The focal length of the lens is 20 cm. A point A convex lens is placed in the XYZ coordinate system such that its optical centre is at [...]
1.The length and breadth of a rectangular piece of land are 500 m and 300 m respectively. Find: (i) Its area. (ii) The cost of the land, if 1 m^2of the land costs Rs. 10,000.
09
Oct
1.The length and breadth of a rectangular piece of land are 500 m and 300 m respectively. Find: (i) Its area. (ii) The cost of the land, if 1 m^2of the land costs Rs. 10,000. 000. 1.The length and breadth of a rectangular piece of land are 500 m and 300 m respectively. Find: (i) [...]
A luminous point object is placed at O, whose image is formed at I as shown in the figure. AB is the optical axis. Which of the following statements are correct ?
09
Oct
A luminous point object is placed at O, whose image is formed at I as shown in the figure. AB is the optical axis. Which of the following statements are correct ? A luminous point object is placed at O whose image is formed at I as shown in the figure. AB is the optical [...]
Two refracting media are separated by a spherical interface as shown in the figure. PP’ is the principal axis mu1 and mu2 are the refractive indices of medium of incidence and medium
09
Oct
Two refracting media are separated by a spherical interface as shown in the figure. PP’ is the principal axis mu1 and mu2 are the refractive indices of medium of incidence and medium Two refracting media are separated by a spherical interface as shown in the figure. PP' is the principal axis mu1 and mu2 are [...]
In the figure shown a point object O is placed in air on the principal axis. The radius of curvature of the spherical surface is 60 cm. If is the final image formed after all the refractions
09
Oct
In the figure shown a point object O is placed in air on the principal axis. The radius of curvature of the spherical surface is 60 cm. If is the final image formed after all the refractions In the figure shown a point object O is placed in air on the principal axis. The radius [...]