Because we can't see the image you're referring to, we can't give the answer to which ray is opposite to BA.
However, we can help. Opposite rays are two rays that both start from a common point and go off in exactly opposite directions. So, if there are two rays (BA and BC) with a common endpoint (B) going in different directions, they are called opposite rays.
yes
naming a line is different from naming a ray. say for example ,if we have line AB,this is similar to line BA while ray AB is different from ray BA.
Yes, provided it is the ray. If AB is a vector then the answer is no.
It is the opposite ray.
The ray comes out parallel to the incident ray because the ray has the opposite refraction as when it entered the block.
The ray opposite from ray BA is ray AB. These rays form a straight line.
A+ ls = ba
Yes.
yes
naming a line is different from naming a ray. say for example ,if we have line AB,this is similar to line BA while ray AB is different from ray BA.
Yes, provided it is the ray. If AB is a vector then the answer is no.
An opposite ray is a pair of rays that share the same endpoint and extend in opposite directions. This can be visualized as two rays emanating from a common point but extending in opposite directions along the same line.
AB and BA.
Yes it names the same ray. For example in a square ABCD you can also call it DCBA or BCDA etc.
Da
BAL-in-sheen
Opposite Rays - are collinear rays having the same endpoint.