Hi!
@The Deterrent
As I have explained in my previous posts,since our missiles(SLBMs) do not possess a telescopic aerospike,they need a "blunt" nose cap to allow for a favorable hydrodynamic configuration. However once the missile clears off water,it doesnt require that anymore hence it is ejected right after missiles comes out of water. it is like this--a blunt tear drop shape similar to torpedos is more favourable from hydrodynamics perspective whereas a pointed nose favors better aerodynamics. In western SLBMs like trident and M-51(french) --they have a telescopic aerospike. So,for under water motion of the missile,they have the blunt nose and as soon as the missile clears water,telescopic aerospike comes out to the full position. India too will have telescopic aerospike in next SLBM--i.e K-5. In fact not a lot of people know that K-5 project has superseded Agni-5 project in terms of priority!