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2. Give the geometric representations of 2x+9 = 0 as an equation (i) in one variable (ii) in two variables
15
Oct
2. Give the geometric representations of 2x+9 = 0 as an equation (i) in one variable (ii) in two variables 2. Give the geometric representations of 2x+9 = 0 as an equation (i) in one variable (ii) in two variables October 15, 2020 Category: Chapter 4 - Linear Equations in Two Variables , Maths , [...]
A small particle of mass m moves in such a way that the potential energy U = ur^2, where a is a constant and r is the distance of the particle from the origin. Assuming Bohr’s model
15
Oct
A small particle of mass m moves in such a way that the potential energy U = ur^2, where a is a constant and r is the distance of the particle from the origin. Assuming Bohr’s model A small particle of mass m moves in such a way that the potential energy U = ur^2 [...]
1. Give the geometric representations of y = 3 as an equation (i) in one variable (ii) in two variables
15
Oct
1. Give the geometric representations of y = 3 as an equation (i) in one variable (ii) in two variables 1. Give the geometric representations of y = 3 as an equation (i) in one variable (ii) in two variables October 15, 2020 Category: Chapter 4 - Linear Equations in Two Variables , Maths , [...]
Find the kinetic energy, potential energy, and total energy in the first and second orbits of hydrogen atom if potential energy in the first orbit is taken to be zero.
15
Oct
Find the kinetic energy, potential energy, and total energy in the first and second orbits of hydrogen atom if potential energy in the first orbit is taken to be zero. and total energy in the first and second orbits of hydrogen atom if potential energy in the first orbit is taken to be zero. Find [...]
8. In countries like USA and Canada, temperature is measured in Fahrenheit, whereas in countries like India, it is measured in Celsius. Here is a linear equation that converts Fahrenheit to Celsius: F = (9/5)C + 32 (i) Draw the graph of the linear equation above using Celsius for x-axis and Fahrenheit for y-axis. (ii) If the temperature is 30°C, what is the temperature in Fahrenheit? (iii) If the temperature is 95°F, what is the temperature in Celsius? (iv) If the temperature is 0°C, what is the temperature in Fahrenheit and if the temperature is 0°F, what is the temperature in Celsius? (v) Is there a temperature which is numerically the same in both Fahrenheit and Celsius? If yes, find it.
15
Oct
8. In countries like USA and Canada, temperature is measured in Fahrenheit, whereas in countries like India, it is measured in Celsius. Here is a linear equation that converts Fahrenheit to Celsius: F = (9/5)C + 32 (i) Draw the graph of the linear equation above using Celsius for x-axis and Fahrenheit for y-axis. (ii) [...]
Using the known values for hydrogen atom, calculate: (a) radius of the third orbit for Li^2+. (b) speed of electron in the fourth orbit for He+.
15
Oct
Using the known values for hydrogen atom, calculate: (a) radius of the third orbit for Li^2+. (b) speed of electron in the fourth orbit for He+. calculate: (a) radius of the third orbit for Li^2+. (b) speed of electron in the fourth orbit for He+. Using the known values for hydrogen atom October 15, 2020 [...]
7. Yamini and Fatima, two students of Class IX of a school, together contributed ₹ 100 towards the Prime Minister’s Relief Fund to help the earthquake victims. Write a linear equation which satisfies this data. (You may take their contributions as ₹ x and ₹ y.) Draw the graph of the same.
15
Oct
7. Yamini and Fatima, two students of Class IX of a school, together contributed ₹ 100 towards the Prime Minister’s Relief Fund to help the earthquake victims. Write a linear equation which satisfies this data. (You may take their contributions as ₹ x and ₹ y.) Draw the graph of the same. 3. If the [...]
6. If the work done by a body on application of a constant force is directly proportional to the distance travelled by the body, express this in the form of an equation in two variables and draw the graph of the same by taking the constant force as 5 units. Also read from the graph the work done when the distance travelled by the body is (i) 2 units (ii) 0 unit
15
Oct
6. If the work done by a body on application of a constant force is directly proportional to the distance travelled by the body, express this in the form of an equation in two variables and draw the graph of the same by taking the constant force as 5 units. Also read from the graph [...]
5. From the choices given below, choose the equation whose graphs are given in Fig. 4.6 and Fig. 4.7.
15
Oct
5. From the choices given below, choose the equation whose graphs are given in Fig. 4.6 and Fig. 4.7. 5. From the choices given below choose the equation whose graphs are given in Fig. 4.6 and Fig. 4.7. October 15, 2020 Category: Chapter 4 - Linear Equations in Two Variables , Maths , NCERT Class [...]
5. From the choices given below, choose the equation whose graphs are given in Fig. 4.6 and Fig. 4.7.
15
Oct
5. From the choices given below, choose the equation whose graphs are given in Fig. 4.6 and Fig. 4.7. 5. From the choices given below choose the equation whose graphs are given in Fig. 4.6 and Fig. 4.7. October 15, 2020 Category: Chapter 4 - Linear Equations in Two Variables , Maths , NCERT Class [...]