The number of solutions of |cos x| = sinx, such that –4π ≤ x ≤ 4π is :
Two identical thin biconvex lenses of focal length 15 cm and refractive index 1.5 are in contact with each other. The space between the lenses is filled with a liquid of refractive index 1.25. The focal length of the combination is ___ cm.
Identify the compound that undergoes SN1 mechanism most fastly
If the sum of all the roots of the equation \(e^{2x} - 11e^x - 45e^{-x} + \frac{81}{2} = 0\) is logeP, then p is equal to _____.