How to implement a bomb explosion in Box2D iphone?

Below code is a simplest way to do that.

-(void) explodeBomb
	{
		b2Vec2 force = b2Vec2(0.25,0.70); // give the direction for the force.
		bombBody->ApplyLinearImpulse(force, bombBodyDef.position);
		CCSprite *sp = (CCSprite *) bombBody->GetUserData();
		sp.opacity = 0; // setting the sprite in the body opacity to zero.
		[self schedule:@selector(destroyBomb) interval:2]; //destroying bombBody after 2 sec.
	}
	-(void) destroyBomb
	{
		CCLOG(@"Destroying Bomb");
		world->DestroyBody(bombBody);
	}