Indian National Physics Olympiad Arihant Sourabh Chapter 9 Optics D C Pandey IIT JEE for NSEP INPhO IPO IPhO conducted by HBCSE Homi Bhabha Center for Science Education
“ Sorrow prepares you for joy. It violently sweeps everything out of your house, so that new joy can find space to enter. It shakes the yellow leaves from the bough of your heart, so that fresh, green leaves can grow in their place. It pulls up the rotten roots, so that new roots hidden beneath have room to grow. Whatever sorrow shakes from your heart, far better things will take their place. ” ― Rumi