Question Answers
Sahay Sir > Question Answers
7.Simplify these expressions and find their values if x=3,a=–1,b=–2: (i) 3x–5–x+9
10
Oct
7.Simplify these expressions and find their values if x=3,a=–1,b=–2: (i) 3x–5–x+9 7.Simplify these expressions and find their values if x=3 a=–1 b=–2: (i) 3x–5–x+9 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
6.Simplify the expressions and find the value if x is equal to 2: (iv) 4(2x–1)+3x+11
10
Oct
6.Simplify the expressions and find the value if x is equal to 2: (iv) 4(2x–1)+3x+11 6.Simplify the expressions and find the value if x is equal to 2: (iv) 4(2x–1)+3x+11 October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
6.Simplify the expressions and find the value if x is equal to 2: (iii) 6x+5(x–2)
10
Oct
6.Simplify the expressions and find the value if x is equal to 2: (iii) 6x+5(x–2) 6.Simplify the expressions and find the value if x is equal to 2: (iii) 6x+5(x–2) October 10, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,
Two opposite forces F1 = 120 N and F2 = 80 N act on an elastic plank of modulus of elasticity Y = 2 x 10^11 N/m^2 and length l=1m placed over a smooth horizontal surface. The cross-sectional area of the plank is S = 0.5 m^2. The change in length of the plank is n ×10^−11 m. Find the value of n .
10
Oct
Two opposite forces F1 = 120 N and F2 = 80 N act on an elastic plank of modulus of elasticity Y = 2 x 10^11 N/m^2 and length l=1m placed over a smooth horizontal surface. The cross-sectional area of the plank is S = 0.5 m^2. The change in length of the plank is [...]
Consider a wire of length L, cross sectional area A and Young’s modulus Y and match column I with column II:
10
Oct
Consider a wire of length L, cross sectional area A and Young’s modulus Y and match column I with column II: Consider a wire of length l cross sectional area A and Young's modulus Y and match column I with column II: October 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]
In column I ,a uniform bar of uniform cross sectional area under the application of forces is shownm in the figure and in column II, some effects are given . Match the following entries of column I with the entries of column II.
10
Oct
In column I ,a uniform bar of uniform cross sectional area under the application of forces is shownm in the figure and in column II, some effects are given . Match the following entries of column I with the entries of column II. a uniform bar of uniform cross sectional area under the application of [...]
With regard to dependence of quantities given in columns I and II, match the following:
10
Oct
With regard to dependence of quantities given in columns I and II, match the following: match the following With regard to dependence of quantities given in columns I and II October 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
If a rod of length L, very small area of cross sectional A young’s modulus of elasticity Y is acted upon by two pararllel forces 3F and F respectively and placed on a smooth horizontal plane.
10
Oct
If a rod of length L, very small area of cross sectional A young’s modulus of elasticity Y is acted upon by two pararllel forces 3F and F respectively and placed on a smooth horizontal plane. If a rod of length L very small area of cross sectional A young's modulus of elasticity Y is [...]
A wire of length L and cross-sectional A is made of a material of Young’s modulus Y, is pulled by a constant force F on a horizontal surface as shown in figure. Then
10
Oct
A wire of length L and cross-sectional A is made of a material of Young’s modulus Y, is pulled by a constant force F on a horizontal surface as shown in figure. Then A wire of length L and cross-sectional A is made of a material of Young's modulus Y is pulled by a constant [...]
Four rods A, B, C and D of the same length and material but of different radii r, r root 2 ,r root 3 and 2 r, respectively, are held between two rigid walls. The temperature of all rods is increased through the same range. If the rods do not bend, then
10
Oct
Four rods A, B, C and D of the same length and material but of different radii r, r root 2 ,r root 3 and 2 r, respectively, are held between two rigid walls. The temperature of all rods is increased through the same range. If the rods do not bend, then are [...]