Question Answers

4.Construct ΔABC such that AB = 2.5 cm, BC = 6 cm and AC = 6.5 cm. Measure ∠B. 4.Construct ΔABC such that AB = 2.5 cm BC = 6 cm and AC = 6.5 cm. Measure ∠B. October 9, 2020 Category: Chapter 10 - Practical Geometry , Maths , NCERT Class 7 ,

A combination of two thin convex lenses of equal focal lengths, is kept separated along the optical axis by a distance of 20 cm between them. The combination behaves as a lens A combination of two thin convex lenses of equal focal lengths is kept separated along the optical axis by a distance of 20 [...]

3.Draw ΔPQR with PQ = 4 cm, QR = 3.5 cm and PR = 4 cm. What type of triangle is this? 3.Draw ΔPQR with PQ = 4 cm QR = 3.5 cm and PR = 4 cm. What type of triangle is this? October 9, 2020 Category: Chapter 10 - Practical Geometry , Maths [...]

A parallel beam of light is incident on a lens of focal length 10 cm. A parallel slab of refractive index 1.5 and thickness 3 cm is placed on the other side of the lens. The nature of the A parallel beam of light is incident on a lens of focal length 10 cm. A [...]

3.Draw ΔPQR with PQ = 4 cm, QR = 3.5 cm and PR = 4 cm. What type of triangle is this? 3.Draw ΔPQR with PQ = 4 cm QR = 3.5 cm and PR = 4 cm. What type of triangle is this? October 9, 2020 Category: Chapter 10 - Practical Geometry , Maths [...]

2.Construct an equilateral triangle of side 5.5 cm. 2.Construct an equilateral triangle of side 5.5 cm. October 9, 2020 Category: Chapter 10 - Practical Geometry , Maths , NCERT Class 7 ,

1.Construct ΔXYZ in which XY = 4.5 cm, YZ = 5 cm and ZX = 6 cm. 1.Construct ΔXYZ in which XY = 4.5 cm YZ = 5 cm and ZX = 6 cm. October 9, 2020 Category: Chapter 10 - Practical Geometry , Maths , NCERT Class 7 ,

4.Construct ΔABC such that AB = 2.5 cm, BC = 6 cm and AC = 6.5 cm. Measure ∠B. 4.Construct ΔABC such that AB = 2.5 cm BC = 6 cm and AC = 6.5 cm. Measure ∠B. October 9, 2020 Category: Chapter 10 - Practical Geometry , Maths , NCERT Class 7 ,

A wire of cross section A is stretched horizontally between two clamps located 2l m apart. A weight W kg is suspended from the mid-point of the wire. If the mid-point sags vertically through a distance x<1 the strain produced is then its new length becomes Young's modulus of rubber is 10^4 N/m^2 and area [...]

A long wire hangs vertically with its upper end clam A torque of 8Nm applied to the free end twists it through 45∘. The potential energy of the twisted wire is A long wire hangs vertically with its upper end clam A torque of 8Nm applied to the free end twists it through 45∘. The [...]