When a red rose flower is observed in blue light, what co...
When a red rose flower is observed in blue light, what colour does the observer see?
Red
Blue
Magenta
yellow
No correct option
Correct answer is E
The colour which an object presents to the eye is the colour of light it reflects. Red rose flower will therefore absorb any other colour and reflect red. Therefore when viewed in blue light, it has no colur to reflect and will therefore appear black. Although mixture of red light and blue light = magenta .
The impulse of a force is deduced from Newton's second law as ...
the ray which causes gas molecules to glow is known as ...
In fleming's right-hand rule, the thumb, the forefinger and the middle finger if held mutually a...
An alternating current with a frequency of 100HZ has a period of ...
Which of the following is not a safety precaution in a nuclear station? ...
A source of sound produces waves in air of wavelength 1.65m. If the speed of sound in air ...
Which of the following graphs gives the correct relationship between energy and mass when mass ...