thé focal length of a convexe lens is 20m where will ne thé imagé ne formée if an object is placed st 60m from thé lens?​

Ajuggler keeps on moving four balls in air throwingthe balls after regular intervals. when one ball leaveshis hand with speed 20 m/s, the position of otherballs with respect to ground is (g = 10 m/s2)​

Draw velocity time graph when an object is uniformly accelerated

In the glass slab experiment shown, four students a ,b,c and did the following: