If \(n-1C_r= (k^2-8)^nC_r+1\) Find \(k\).
- \(k\in[-3,-2\sqrt2) \cup(2\sqrt2,3)\)
- \(k\in [-4,-2\sqrt3\cup(2\sqrt3,4]\)
- \(k\in [2\sqrt3,4]\)
- \(k\in[3,2\sqrt3]\)
The Correct Option is A
Solution and Explanation
The correct option is (A): \(k\in[-3,-2\sqrt2) \cup(2\sqrt2,3)\)
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In a Young's double slit experiment, three polarizers are kept as shown in the figure. The transmission axes of \( P_1 \) and \( P_2 \) are orthogonal to each other. The polarizer \( P_3 \) covers both the slits with its transmission axis at \( 45^\circ \) to those of \( P_1 \) and \( P_2 \). An unpolarized light of wavelength \( \lambda \) and intensity \( I_0 \) is incident on \( P_1 \) and \( P_2 \). The intensity at a point after \( P_3 \), where the path difference between the light waves from \( S_1 \) and \( S_2 \) is \( \frac{\lambda}{3} \), is:
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Concepts Used:
Derivatives
Derivatives are defined as a function's changing rate of change with relation to an independent variable. When there is a changing quantity and the rate of change is not constant, the derivative is utilised. The derivative is used to calculate the sensitivity of one variable (the dependent variable) to another one (independent variable). Derivatives relate to the instant rate of change of one quantity with relation to another. It is beneficial to explore the nature of a quantity on a moment-to-moment basis.
Few formulae for calculating derivatives of some basic functions are as follows:
