Question : Convex mirrors are used as rear-view mirrors in motorcycles because:

Option 1: It forms a virtual image

Option 2: It forms an erect (upright) image

Option 3: It forms a smaller image as compared with the object

Option 4: All of the above

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

Option 1: convex

Option 2: concave

Option 3: plano-concave

Option 4: plano-convex

Question : The pyramid of numbers in an aquatic ecosystem is _________.

Option 1: always inverted

Option 2: always upright

Option 3: partially inverted

Option 4: spindle-shaped

Question : If $x$ and $y$ are real numbers, then the least possible value of $4 (x -2)^2+ (y-3)^2-2 (x-3)^2$ is:

Option 1: 3

Option 2: –4

Option 3: 1

Option 4: –8

Question : Directions: In the following question, arrange the following words as per their order in the dictionary.
1. Directorial
2. Directory
3. Directive
4. Directional

Option 1: 1, 3, 4, 2

Option 2: 3, 4, 2, 1

Option 3: 3, 4, 1, 2

Option 4: 4, 3, 1, 2