Question Answers

Example 8 : For each of the graphs given in Fig. 4.5 select the equation whose graph it is from the choices given below: (a) For Fig 4.5(i) (i) x+y=0 (ii) y=2x (iii) y=x (iv) y=2x+1 Example 8 : For each of the graphs given in Fig. 4.5 select the equation whose graph it is [...]

Example 7 : You know that the force applied on a body is directly proportional to the acceleration produced in the body. Write an equation to express this situation and plot the graph of the equation. Example 7 : You know that the force applied on a body is directly proportional to the acceleration produced [...]

Calculate the wavelength of K alpha line for the target made of tungsten (Z = 74). Calculate the wavelength of K alpha line for the target made of tungsten (Z = 74). October 15, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Calculate the cut-off wavelength of the X-ray emitted by a Coolidge tube operation at 40 kV. Calculate the cut-off wavelength of the X-ray emitted by a Coolidge tube operation at 40 kV. October 15, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,

Example 6 : Draw the graph of x + y =7. Example 6 : Draw the graph of x + y =7. October 15, 2020 Category: Chapter 4 - Linear Equations in Two Variables , Maths , NCERT Class 9 ,

State the following statements as True or False. (a) X-rays are electromagnetic waves because these are produced by the deceleration of fast moving electrons. (b) X-rays are electromagnetic waves because An electron having energy 20 eV collides with a hydrogen atom in the ground state. As a result of the collision the atom is excited [...]

Suppose that means were available for stripping 28 electrons from 29Cu in vapour of this metal. (a) Compute the first three energy levels for the remaining electron. (b) Find the wavelength Suppose that means were available for stripping 28 electrons from 29Cu in vapour of this metal. (a) Compute the first three energy levels for [...]

The ground state energy of hydrogen atom is -13.6 eV. (a) What is the kinetic energy of an electron in the second excited state? (b) If the electron jumps to the ground state from the The ground state energy of hydrogen atom is -13.6 eV. (a) What is the kinetic energy of an electron in [...]

Example 5 : Given the point (1, 2), find the equation of a line on which it lies. How many such equations are there? 2 Example 5 : Given the point (1 find the equation of a line on which it lies. How many such equations are there? October 15, 2020 Category: Chapter 4 - [...]

The energy levels of an atom are as shown in figure. Which one of these transitions will result in the emission of a photon of wavelength 275 nm ? The energy levels of an atom are as shown in figure. Which one of these transitions will result in the emission of a photon of wavelength [...]