Two monochromatic beams meet at a point have a path-difference of 8 wavelengths. A mica sheet of thickness 2.4 microns is introduced
into the path of one of the beams. If 2=600nm and n=1.5. Calculate
the path difference now

Aman is trying to drag a small tree that he cut down. if the static coefficient of friction of the tree on the ground is 0.5 and the tree weighs 670 n, what is the minimum amount of horizontal force that the man will need to apply so that the tree will start moving? o a. 465 n o b. 230 n o c. 670 n o d. 335 n