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Two waves of light in air have the same wavelength and are initially in phase. They then travel through plastic layers with thicknesses of L1 = 3/5 mm and L2 = 5.0 mm and indices of refraction
10
Oct
Two waves of light in air have the same wavelength and are initially in phase. They then travel through plastic layers with thicknesses of L1 = 3/5 mm and L2 = 5.0 mm and indices of refraction Two waves of light in air have the same wavelength and are initially in phase. They then travel [...]
2.Simplify and express each of the following in exponential form: (iii) 25^4 ÷ 5^3
10
Oct
2.Simplify and express each of the following in exponential form: (iii) 25^4 ÷ 5^3 2.Simplify and express each of the following in exponential form: (iii) 25^4 ÷ 5^3 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
2.Simplify and express each of the following in exponential form: (ii) [(5^2)^3 × 5^4] ÷ 5^7
10
Oct
2.Simplify and express each of the following in exponential form: (ii) [(5^2)^3 × 5^4] ÷ 5^7 2.Simplify and express each of the following in exponential form: (ii) [(5^2)^3 × 5^4] ÷ 5^7 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
Two beams of light having intensities I and 4 I interfere to produce a fringe pattern on a screen. The phase between the beams is pie/2 at point A and pie at point B. Then, the difference
10
Oct
Two beams of light having intensities I and 4 I interfere to produce a fringe pattern on a screen. The phase between the beams is pie/2 at point A and pie at point B. Then, the difference the difference Two beams of light having intensities I and 4 I interfere to produce a fringe pattern [...]
In Young’s double slit experiment, the wavelength of light was changed from 7000 A to 3500 A. While doubling the separation between the slits, which of the following is not true for
10
Oct
In Young’s double slit experiment, the wavelength of light was changed from 7000 A to 3500 A. While doubling the separation between the slits, which of the following is not true for In Young's double slit experiment the wavelength of light was changed from 7000 A to 3500 A. While doubling the separation between the [...]
Young’s double slit experiment is conducted in water (mu 1 ) as shown in figure, and a glass plate of thickness t and refractive index mu 2 is placed in the path of S2. Find the magnitude
10
Oct
Young’s double slit experiment is conducted in water (mu 1 ) as shown in figure, and a glass plate of thickness t and refractive index mu 2 is placed in the path of S2. Find the magnitude and a glass plate of thickness t and refractive index mu 2 is placed in the path of [...]
2.Simplify and express each of the following in exponential form: (i) 2^3 × 3^4 × 4/3 × 32
10
Oct
2.Simplify and express each of the following in exponential form: (i) 2^3 × 3^4 × 4/3 × 32 2.Simplify and express each of the following in exponential form: (i) 2^3 × 3^4 × 4/3 × 32 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
In a two-slit experiment with white light, a white fringe is observed on a screen kept behind the slits. When the screen in moved away by 0.05m, this white fringe
10
Oct
In a two-slit experiment with white light, a white fringe is observed on a screen kept behind the slits. When the screen in moved away by 0.05m, this white fringe a white fringe is observed on a screen kept behind the slits. When the screen in moved away by 0.05m In a two-slit experiment with [...]
1.Using laws of exponents, simplify and write the answer in exponential form: (x) 8^t ÷ 8^2
10
Oct
1.Using laws of exponents, simplify and write the answer in exponential form: (x) 8^t ÷ 8^2 1.Using laws of exponents simplify and write the answer in exponential form: (x) 8^t ÷ 8^2 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
A rigid ring A and a rigid thin disk B both made of same material when gently placed on water just manage to float due to surface tension as shown in the figure. Both the ring and the disk have same radius what can you conclude about their masses? (a). Both habve the same mass. (b). mass of ring is half of that of the disk (c). mass of the ring is double to that of the disk. (d). more information is needed to decide.
10
Oct
A rigid ring A and a rigid thin disk B both made of same material when gently placed on water just manage to float due to surface tension as shown in the figure. Both the ring and the disk have same radius what can you conclude about their masses? (a). Both habve the same mass. [...]