Question Answers
Sahay Sir > Question Answers
1. Using appropriate properties find: (ii) 2/5 x (- 3/7) – 1/6 x 3/2 + 1/14 x 2/5
10
Oct
1. Using appropriate properties find: (ii) 2/5 x (- 3/7) – 1/6 x 3/2 + 1/14 x 2/5 1. Using appropriate properties find: (ii) 2/5 x (- 3/7) - 1/6 x 3/2 + 1/14 x 2/5 October 10, 2020 Category: Chapter 1 - Rational Numbers , Maths , NCERT Class 8 ,
1. Using appropriate properties find: (i) -2/3 x 3/5 + 5/2 – 3/5 x 1/6
10
Oct
1. Using appropriate properties find: (i) -2/3 x 3/5 + 5/2 – 3/5 x 1/6 1. Using appropriate properties find: (i) -2/3 x 3/5 + 5/2 - 3/5 x 1/6 October 10, 2020 Category: Chapter 1 - Rational Numbers , Maths , NCERT Class 8 ,
A thin uniform film of refractive index 1.75 is placed on a sheet of glass of refractive index 1.5. At room temperature (20 C), this film is just thick enough for light with wavelength 600nm
10
Oct
A thin uniform film of refractive index 1.75 is placed on a sheet of glass of refractive index 1.5. At room temperature (20 C), this film is just thick enough for light with wavelength 600nm A thin uniform film of refractive index 1.75 is placed on a sheet of glass of refractive index 1.5. At [...]
Intensity observed in an interference pattern is I = I0 sin^2 theta At theta = 30, intensity I = 5 +- 0.002. The percentage error in angle is
10
Oct
Intensity observed in an interference pattern is I = I0 sin^2 theta At theta = 30, intensity I = 5 +- 0.002. The percentage error in angle is intensity I = 5 +- 0.002. The percentage error in angle is Intensity observed in an interference pattern is I = I0 sin^2 theta At theta = [...]
3.Construct an isosceles right angled triangle ABC, where m∠ACB = 90^∘ and AC = 6 cm.
10
Oct
3.Construct an isosceles right angled triangle ABC, where m∠ACB = 90^∘ and AC = 6 cm. 3.Construct an isosceles right angled triangle ABC where m∠ACB = 90^∘ and AC = 6 cm. October 10, 2020 Category: Chapter 3 - Understanding Quadrilaterals , Maths , NCERT Class 8 ,
In Young’s double-slit experiment set up, source S of wavelength 50 nm illuminates two slits S1 and S2 which act as two coherent sources. The source S oscillates about its own
10
Oct
In Young’s double-slit experiment set up, source S of wavelength 50 nm illuminates two slits S1 and S2 which act as two coherent sources. The source S oscillates about its own In Young's double-slit experiment set up source S of wavelength 50 nm illuminates two slits S1 and S2 which act as two coherent sources. [...]
A long horizontal slit is placed 1 mm above a horizontal plane mirror. The interference between the light coming directly from the slit and that after reflection is seen on a screen
10
Oct
A long horizontal slit is placed 1 mm above a horizontal plane mirror. The interference between the light coming directly from the slit and that after reflection is seen on a screen A long horizontal slit is placed 1 mm above a horizontal plane mirror. The interference between the light coming directly from the slit [...]
2.Construct a right angled triangle whose hypotenuse is 6 cm long and one the legs is 4 cm long.
10
Oct
2.Construct a right angled triangle whose hypotenuse is 6 cm long and one the legs is 4 cm long. 2.Construct a right angled triangle whose hypotenuse is 6 cm long and one the legs is 4 cm long. October 10, 2020 Category: Chapter 3 - Understanding Quadrilaterals , Maths , NCERT Class 8 ,
High-quality camera lenses are often coated to prevent reflection. A lens has an optical index of refraction of 1.72 and a coating with an optical index of refraction 1.31. For near normal
10
Oct
High-quality camera lenses are often coated to prevent reflection. A lens has an optical index of refraction of 1.72 and a coating with an optical index of refraction 1.31. For near normal High-quality camera lenses are often coated to prevent reflection. A lens has an optical index of refraction of 1.72 and a coating with [...]
1.Construct the right angled ΔPQR, where m∠Q = 90^∘, QR = 8 cm and PR = 10 cm.
10
Oct
1.Construct the right angled ΔPQR, where m∠Q = 90^∘, QR = 8 cm and PR = 10 cm. 1.Construct the right angled ΔPQR QR = 8 cm and PR = 10 cm. where m∠Q = 90^∘ October 10, 2020 Category: Chapter 3 - Understanding Quadrilaterals , Maths , NCERT Class 8 ,