Two water-squash mixtures, the first having a water-to-squash ratio of 4 : 1 and the other having a ratio of 3 : 1, are blended in the ratio 1 : 2. What is the water : squash ratio in the blend?
What is the principal focus of a spherical mirror?
A.
It is a point from which the rays of light appear to be coming from on the principal axis of a convex mirror.
B.
It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection or appear to be arising from this point on the principal axis.
C.
It is the centre of a hollow sphere of which the spherical mirror is a part.
B. It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection or appear to be arising from this point on the principal axis.
25.
Consider the given statement to be true even if they seem to be at variance with the commonly known facts and decide which of the given conclusions logically follows from the given statement.
Statement:
Some tigers are cats. All the cats are rats.
Conclusions:
1. All the rats are cats
2. Some of the tigers are rats
