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A soap film of thickness 0.0011 mm appears dark when seen by reflected light of wavelength 5800 A. What is the refractive index of soap solution if it is between 1.2 and 1.5
09
Oct
A soap film of thickness 0.0011 mm appears dark when seen by reflected light of wavelength 5800 A. What is the refractive index of soap solution if it is between 1.2 and 1.5 A soap film of thickness 0.0011 mm appears dark when seen by reflected light of wavelength 5800 A. What is the refractive [...]
An oil film (n = 1.45) floating on water is illuminated by white light at normal incidence. The film is 280 nm thick. Find: (a) the wavelength of the light in the visible spectrum
09
Oct
An oil film (n = 1.45) floating on water is illuminated by white light at normal incidence. The film is 280 nm thick. Find: (a) the wavelength of the light in the visible spectrum An oil film (n = 1.45) floating on water is illuminated by white light at normal incidence. The film is 280 [...]
By an anodizing process, a transparent film of aluminium oxide of thickness t = 250 nm and index of refraction n2 = 1.80 is deposited on a sheet of polished aluminium. Which
09
Oct
By an anodizing process, a transparent film of aluminium oxide of thickness t = 250 nm and index of refraction n2 = 1.80 is deposited on a sheet of polished aluminium. Which a transparent film of aluminium oxide of thickness t = 250 nm and index of refraction n2 = 1.80 is deposited on a [...]
2.Add: (iii)–7mn+5,12mn+2,9mn–8,–2mn–3
09
Oct
2.Add: (iii)–7mn+5,12mn+2,9mn–8,–2mn–3 –2mn–3 12mn+2 2.Add: (iii)–7mn+5 9mn–8 October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
2.Add: (ii) t–8tz,3tz–z,z–t
09
Oct
2.Add: (ii) t–8tz,3tz–z,z–t 2.Add: (ii) t–8tz 3tz–z z–t October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
2.Add: (i) 3mn,–5mn,8mn–4mn
09
Oct
2.Add: (i) 3mn,–5mn,8mn–4mn –5mn 2.Add: (i) 3mn 8mn–4mn October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
A thin transparent film of thickness 3000 A and refractive index 1.5 is deposited on a sheet made of a metal. Assuming normal incidence of light and also that the film is a plane
09
Oct
A thin transparent film of thickness 3000 A and refractive index 1.5 is deposited on a sheet made of a metal. Assuming normal incidence of light and also that the film is a plane A thin transparent film of thickness 3000 A and refractive index 1.5 is deposited on a sheet made of a metal. [...]
1.Simplify combining like terms: (3y^2+5y–4)–(8y–y^2–4)
09
Oct
1.Simplify combining like terms: (3y^2+5y–4)–(8y–y^2–4) 1.Simplify combining like terms: (3y^2+5y–4)–(8y–y^2–4) October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
1.Simplify combining like terms: (v) 5x^2y–5x^2+3yx^2–3y^2+x^2–y^2+8xy^2–3y^2
09
Oct
1.Simplify combining like terms: (v) 5x^2y–5x^2+3yx^2–3y^2+x^2–y^2+8xy^2–3y^2 1.Simplify combining like terms: (v) 5x^2y–5x^2+3yx^2–3y^2+x^2–y^2+8xy^2–3y^2 October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
1.Simplify combining like terms: (iv) 3a–2b–ab–(a–b+ab)+3ab+b–a
09
Oct
1.Simplify combining like terms: (iv) 3a–2b–ab–(a–b+ab)+3ab+b–a 1.Simplify combining like terms: (iv) 3a–2b–ab–(a–b+ab)+3ab+b–a October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,