Question Answers
Sahay Sir > Question Answers
A plane wave of monochromatic light falls normally on a uniform thin film of oil which covers a glass plate. The wavelength of source can be varied continuously. Complete destructive
10
Oct
A plane wave of monochromatic light falls normally on a uniform thin film of oil which covers a glass plate. The wavelength of source can be varied continuously. Complete destructive A plane wave of monochromatic light falls normally on a uniform thin film of oil which covers a glass plate. The wavelength of source can [...]
2^3 > 5^2
10
Oct
2^3 > 5^2 2^3 > 5^2 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
3.Say true or false and justify your answer: (i) 10 × 10^11 = 100^11
10
Oct
3.Say true or false and justify your answer: (i) 10 × 10^11 = 100^11 3.Say true or false and justify your answer: (i) 10 × 10^11 = 100^11 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
2.Simplify and express each of the following in exponential form: (xii) (2^3 × 2)^2
10
Oct
2.Simplify and express each of the following in exponential form: (xii) (2^3 × 2)^2 2.Simplify and express each of the following in exponential form: (xii) (2^3 × 2)^2 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
A thin film of refractive index 1.5 and thickness 4 * 10 ^-5 cm is illuminated by light normal to the surface. What wavelength within the visible spectrum will be intensified in the reflected
10
Oct
A thin film of refractive index 1.5 and thickness 4 * 10 ^-5 cm is illuminated by light normal to the surface. What wavelength within the visible spectrum will be intensified in the reflected A thin film of refractive index 1.5 and thickness 4 * 10 ^-5 cm is illuminated by light normal to the [...]
In Young’s double-slit experiment d/D = 10^-4 (d = distance between slits, D = distance of screen from the slits). At point P on the screen, resulting intensity is equal to the intensity due to the
10
Oct
In Young’s double-slit experiment d/D = 10^-4 (d = distance between slits, D = distance of screen from the slits). At point P on the screen, resulting intensity is equal to the intensity due to the D = distance of screen from the slits). At point P on the screen In Young's double-slit experiment d/D [...]
Two identical coherent sources are placed on a diameter of a circle of radius R at separation x (<<R) symmetrical about the center of the circle. The sources emit identical wavelength
10
Oct
Two identical coherent sources are placed on a diameter of a circle of radius R at separation x (<<R) symmetrical about the center of the circle. The sources emit identical wavelength Two identical coherent sources are placed on a diameter of a circle of radius R at separation x (<<R) symmetrical about the center of [...]
In a YDSE with identical slits, the intensity of the central bright fringe is I0. If one of the slits is covered, the intensity at the same point is
10
Oct
In a YDSE with identical slits, the intensity of the central bright fringe is I0. If one of the slits is covered, the intensity at the same point is In a YDSE with identical slits the intensity at the same point is the intensity of the central bright fringe is I0. If one of the [...]
Blue light of wavelength 480 nm is most strongly reflected off a thin film of oil on a glass slab when viewed near normal incidence. Assuming that the index of refraction of the oil
10
Oct
Blue light of wavelength 480 nm is most strongly reflected off a thin film of oil on a glass slab when viewed near normal incidence. Assuming that the index of refraction of the oil Blue light of wavelength 480 nm is most strongly reflected off a thin film of oil on a glass slab when [...]
Light is incident at an angle phi with normal to a plane containing two slits of separation d. Select the expression that correctly describes the positions of the interference maxima in terms
10
Oct
Light is incident at an angle phi with normal to a plane containing two slits of separation d. Select the expression that correctly describes the positions of the interference maxima in terms Light is incident at an angle phi with normal to a plane containing two slits of separation d. Select the expression that correctly [...]