A red rose when seen in blue light appears
- Ared
- Bblue
- ✓black
- Dgreen
Answer: C.
View full solution →Question types
Light question types
51 questions across 7 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.
51
Questions
7
Question groups
5
Question types
01
MCQ
10 Q→02[1 Mark Question Answer]
10 Q→03[2 Mark Question Answer]
6 Q→04[3 Mark Question Answer]
1 Q→05[5 Mark Question Answer]
6 Q→06fill in the blanks.
7 Q→07TRUE / FALSE
11 Q→Sample Questions
Light questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Which of the following combination of colour will produce white colour?
- Agreen + magenta
- Bcyan + blue
- Cyellow + red
- ✓red + green
Answer: D.
View full solution →Which of the following is not a primary colour?
- Ared
- Bgreen
- ✓black
- Dblue
Answer: C.
View full solution →The word ‘B’ appears in a plane mirror as ‘8’ due to
- Areflection
- Bwrong positioning of the mirror
- ✓lateral inversion
- Dcolour addition
Answer: C.
View full solution →If you stand 1 m in front of a plane mirror, how far away would you see yourself in the mirror ?
- ✓1 m
- B2 m
- C3 m
- D4 m
Answer: A.
View full solution →An object appears blue in white light. Of what colour will it appear in red light?
The beams of red light and green light fall on the same spot on a white screen. What colour will appear on the screen?
Name the primary colours. Why are these colours called so?
Write a short note on the speed of light.
If the angle between the incident ray and a plane mirror is 30°, then what will be the angle of reflection?
What do you understand by colour subtraction?
How are we able to see different colours?
What are secondary colours? Why are they called so?
State any two uses of a plane mirror.
What is meant by lateral inversion of an image formed by a plane mirror ?
Look at the following figures and identify the colour of appearance of each surface.
In the given figure, PQ is a mirror strip, AO is a ray incident at O. Label the different terms related to reflection in the figure
State the characteristics of an image formed by a plane mirror.
Prove geometrically that the image formed by a plane mirror is at the same distance behind the mirror as the objects in front of the mirror.
Describe an experiment to show that the angle of incidence is equal to the angle of- reflection.
A pair of colours which on mixing produce white colour are called _________ colours.
When the lights of red, green and blue colours are mixed, __________ light is produced.
The speed of light is around ____________ in vacuum.
The law of reflection states that the angle of incidence is always ___________ to the angle of reflection.
A ray of light that falls on a mirror is called the ___________ ray.
The colours red, green and blue are called secondary colours.
The colour of an object does not depend upon the colour of light reflected by it.
A magenta colour object when seen in yellow light appears red.
The white object seen in a coloured light appears to have the colour of the coloured light.
Light needs a material medium to travel.
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