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Multiple Choice Question with Only One Choice Correct
Two uniform brass rods A and B of lengths l and 2l and radii 2r and r respectively are heated to the same temperature. The ratio of the increase in the length of A to that of B is

(a)	1 : 1	(b)	1 : 2
(c)	1 : 4	(d)	2 : 1

Chemistry

Increasing/Decreasing Characteristics

Increasing reactivity with water

Li, Na, K, Rb, Cs

Mathematics

Passage Based Question
Passage I
A square matrix A of size n x n is said to be unimodular if det (A) = 1.
IF A and B are two unimodular matrices, then which one of the following is a unimodular matrix?