Question : If the sum of two quantities is equal to three times their difference, then the ratio of the two quantities is:

Option 1: 1 : 3

Option 2: 3 : 1

Option 3: 2 : 1

Option 4: 2 : 3

Question : The ratio of the curved surface area of two cones is 1 : 4 and the ratio of slant height of the two cones is 2 : 1. What is the ratio of the radius of the two cones?

Option 1: 1 : 2

Option 2: 1 : 4

Option 3: 1 : 8

Option 4: 1 : 1

Question : In a magnifying glass, _________ lens is used.

Option 1: convex

Option 2: concave

Option 3: plano-concave

Option 4: plano-convex

Question : If the square of the sum of two numbers is equal to 4 times their product, then the ratio of these numbers is:

Option 1: 2 : 1

Option 2: 1 : 3

Option 3: 1 : 1

Option 4: 1 : 2

Question : The ratio of the area of two isosceles triangles having the same vertical angle (i.e. the angle between equal sides) is 1 : 4. The ratio of their heights is:

Option 1: 1 : 4

Option 2: 2 : 5

Option 3: 1 : 2

Option 4: 3 : 4