Question : White light is an example of:

Option 1: LASER light

Option 2: Plane polarised light

Option 3: Monochromatic light

Option 4: Polychromatic light

Question : In which of the following ways of heat transfer no medium is required?

Option 1: Radiation and Conduction both

Option 2: Conduction

Option 3: Convection

Option 4: Radiation

Question : Which of the following statement(s) is/are correct?

Option 1: Oxides of non-metals are basic

Option 2: Oxides of non-metals are acidic

Option 3: Oxides of metals are acidic

Option 4: All options are correct

Question : If $a$ and $b$ are rationals and $a\sqrt{2}+b\sqrt{3}=\sqrt{98}+\sqrt{108}-\sqrt{48}-\sqrt{72}$ then, the values of $a$ and $b$ respectively, are:

Option 1: 1, 2

Option 2: 1, 3

Option 3: 2, 1

Option 4: 2, 3

Question : The cost of 3 cups and 5 plates is INR 1,080 and the cost of 2 cups and 4 plates is INR 840. Find the ratio of the cost of a cup to the cost of a plate.

Option 1: 1 : 3

Option 2: 2 : 3

Option 3: 1 : 1

Option 4: 1 : 2