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A convex lens of focal length 20 cm and another plano convex lens of focal length 40 cm are placed co-axially (see figure). The plano convex lens is silvered on plane surface. A convex lens of focal length 20 cm and another plano convex lens of focal length 40 cm are placed co-axially (see figure). [...]

1. Which congruence criterion do you use in the following? Given: EB = DB 1. Which congruence criterion do you use in the following? Given: EB = DB October 8, 2020 Category: Chapter 7 - Congruence of Triangles , Maths , NCERT Class 7 ,

1. Which congruence criterion do you use in the following? Given: Angle MLN = Angle FGH 1. Which congruence criterion do you use in the following? Given: Angle MLN = Angle FGH October 8, 2020 Category: Chapter 7 - Congruence of Triangles , Maths , NCERT Class 7 ,

In an optics experiment, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. a student varies the position of a convex lens and for each position In an optics experiment the screen [...]

1. Which congruence criterion do you use in the following? Given: ZX = RP 1. Which congruence criterion do you use in the following? Given: ZX = RP October 8, 2020 Category: Chapter 7 - Congruence of Triangles , Maths , NCERT Class 7 ,

1. Which congruence criterion do you use in the following? Given: AC=DF 1. Which congruence criterion do you use in the following? Given: AC=DF October 8, 2020 Category: Chapter 7 - Congruence of Triangles , Maths , NCERT Class 7 ,

4. If ∆DEF ≅ ∆BCA, write the part(s) of ∆BCA that correspond to (i) ∠E (ii) (��) ̅ (iii) ∠F (iv) (��) ̅ 4. If ∆DEF ≅ ∆BCA write the part(s) of ∆BCA that correspond to (i) ∠E (ii) (��) ̅ (iii) ∠F (iv) (��) ̅ October 8, 2020 Category: Chapter 7 - Congruence of [...]

In the arrangement shown in figure, O is the object. An observer is to the left of convex lens and looking towards lens. The observer will see an image In the arrangement shown in figure O is the object. An observer is to the left of convex lens and looking towards lens. The observer will [...]

3. If ΔABC ≅ ΔFED under the correspondence ABC↔FED, write all the corresponding congruent parts of the triangles. 3. If ΔABC ≅ ΔFED under the correspondence ABC↔FED write all the corresponding congruent parts of the triangles. October 8, 2020 Category: Chapter 7 - Congruence of Triangles , Maths , NCERT Class 7 ,

Give any two real-life examples for congruent shapes. Give any two real-life examples for congruent shapes. October 8, 2020 Category: Chapter 7 - Congruence of Triangles , Maths , NCERT Class 7 ,