Question : The colour of the ocean appears to be blue because the sunlight falling on it is:

Option 1: reflected

Option 2: refracted

Option 3: diffracted

Option 4: scattered

Question : In a coloured picture of blue and yellow colours, blue and yellow colours are used in the ratio of 4 : 3, respectively. If in the upper half, blue : yellow is 2 : 3, then in the lower half, blue : yellow is:

Option 1: $1:1$

Option 2: $2:1$

Option 3: $26:9$

Option 4: $9:26$

Question : The purpose of an optical filter is to___________.

Option 1: reflect lights of different colours

Option 2: dispense light into component colours

Option 3: refract the light of different colours

Option 4: transmit or absorb light of different colours

Question : Directions: Two different positions of the same dice have different colours - White, Red, Blue, Yellow, Green, and Black - written on them. Identify the colour on the face opposite the face showing Blue.

Option 1: White

Option 2: Black

Option 3: Green

Option 4: Yellow

Question : Rini has mixed two colours 'C₁' and 'C₂' in the ratio 2 : 3. If the rate of the colour 'C₁' is INR 500 per unit and she is selling the mixture of the two colours at INR 650 per unit at a breakeven price, then what is the rate (in INR) per unit of the second colour, that is, 'C₂'?

Option 1: INR 750

Option 2: INR 725

Option 3: INR 760

Option 4: INR 765