Loop tracing

A small block of mass m slides along a frictionless loop-the-loop (loop inside loop) track. What should be the ratio of the radius of the outer loop to the radius of the inner loop so that the the block may not lose contact at the highest point of the inner loop ?

A small circular loop is suspended from an insulating thread. Another coaxial circular loop carrying a current I and having radius much larger than the first loop starts moving towards the smaller loop. The smaler loop will

A small circular loop is suspended from an insulating thread. Another coaxial circular loop carrying a current I and having radius much larger than the first loop starts moving towards the smaller loop. The smaller loop will :

Postanal tail can be traced in

Protected tympanum can be traced in

Largest number of species are traced in

Supercoiled DNA can be traced in

Transfusion tissue can be traced in

The haemoglobin like pigment can be traced in