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1.Simplify combining like terms: (ii) –z^2+13z^2–5z+7z^3–15z
09
Oct
1.Simplify combining like terms: (ii) –z^2+13z^2–5z+7z^3–15z 1.Simplify combining like terms: (ii) –z^2+13z^2–5z+7z^3–15z October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
1.Simplify combining like terms: (i) 21b–32+7b–20b
09
Oct
1.Simplify combining like terms: (i) 21b–32+7b–20b 1.Simplify combining like terms: (i) 21b–32+7b–20b October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
Refractive index of a thin soap film of a uniform thickness is 1.34. Find the smallest thickness of the film that gives an interference maximum in the reflected light when light
09
Oct
Refractive index of a thin soap film of a uniform thickness is 1.34. Find the smallest thickness of the film that gives an interference maximum in the reflected light when light Refractive index of a thin soap film of a uniform thickness is 1.34. Find the smallest thickness of the film that gives an interference [...]
7.Identify like terms in the following: (b)10pq, 7p, 8q,–p^2q^2, –7qp, –100q, 23,12q^2p^2, –5p^2, 41, 2405p, 78qp,13p^2q, qp^2, 701p^2
09
Oct
7.Identify like terms in the following: (b)10pq, 7p, 8q,–p^2q^2, –7qp, –100q, 23,12q^2p^2, –5p^2, 41, 2405p, 78qp,13p^2q, qp^2, 701p^2 –100q –5p^2 –7qp –p^2q^2 12q^2p^2 13p^2q 23 2405p 41 7.Identify like terms in the following: (b)10pq 701p^2 78qp 7p 8q qp^2 October 9, 2020 Category: Chapter 12 - Algebraic Expressions , Maths , NCERT Class 7 ,
A ray of light is incident on a thin film. As shown in figure M, N are two reflected rays and P, Q are two transmitted rays. Rays N and Q undergo a phase change of pie. Correct
09
Oct
A ray of light is incident on a thin film. As shown in figure M, N are two reflected rays and P, Q are two transmitted rays. Rays N and Q undergo a phase change of pie. Correct A ray of light is incident on a thin film. As shown in figure M N are [...]
7.Identify like terms in the following: (a) –xy^2, –4yx^2, 8x^2, 2xy^2, 7y, –11x^2–100x, –11yx, 20x^2y, –6x^2, y, 2xy,3x
09
Oct
7.Identify like terms in the following: (a) –xy^2, –4yx^2, 8x^2, 2xy^2, 7y, –11x^2–100x, –11yx, 20x^2y, –6x^2, y, 2xy,3x –11x^2–100x –11yx –4yx^2 –6x^2 20x^2y 2xy 2xy^2 3x 7.Identify like terms in the following: (a) –xy^2 7y 8x^2 y October 9, 2020 Category: Chapter 12 - Algebraic Expressions , Maths , NCERT Class 7 ,
Two coherent narrow slits emitting light of wavelength lemda in the same phase are placed parallel to each other at a small separation of 2 lemda. The light is collected on a screen
09
Oct
Two coherent narrow slits emitting light of wavelength lemda in the same phase are placed parallel to each other at a small separation of 2 lemda. The light is collected on a screen Two coherent narrow slits emitting light of wavelength lemda in the same phase are placed parallel to each other at a small [...]
Two coherent narrow slits emitting light of wavelength lemda in the same phase are placed parallel to each other at a small separation of 3 lemda. The light is collected on a screen
09
Oct
Two coherent narrow slits emitting light of wavelength lemda in the same phase are placed parallel to each other at a small separation of 3 lemda. The light is collected on a screen Two coherent narrow slits emitting light of wavelength lemda in the same phase are placed parallel to each other at a small [...]
Waves emitted by two identical sources produces intensity of K unit at a point on screen where path difference between these waves is lemda, calculate the intensity at that
09
Oct
Waves emitted by two identical sources produces intensity of K unit at a point on screen where path difference between these waves is lemda, calculate the intensity at that calculate the intensity at that Waves emitted by two identical sources produces intensity of K unit at a point on screen where path difference between these [...]
Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beam is pie/2 at point A and 2 pie at point B. Then
09
Oct
Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the beam is pie/2 at point A and 2 pie at point B. Then Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The [...]