Related Questions

If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?
A lUV < lIR < lVIS
B lUV > lVIS > lIR
C lUV > lIR > lVIS
D lUV < lVIS < lIR
Which light is most effective in photosynthesis?
A Red
B Blue
C Green
D Violet
Which light is least effective in photosynthesis?
A Blue light
B Green light
C Red light
D Sunlight
Which one is important in photosynthesis to allows plants to absorb energy from light?
A Xanthophyll
B Carotene
C Chlorophyll
D Phaeophytin
The green light only ever goes on when tank A is full and tank C isn't empty. The red light is always on unless either tank A isn't Full or tank B is empty. Given that the green light is on, we can conclude all of the following EXCEPT---
A Tank A cannot be empty
B The red light must be on
C Tank C cannot be empty
D we don't have enough information to determine whether tank B is empty or not
The surface of a certain planet reflects 80 percent of the light that strikes it. The clouds around the planet then absorb 40 percent of the reflected light. What percent of the light that strikes the planet is reflected from the surface and passes through the clouds without being absorbed?
A 32%
B 40%
C 48%
D 60%
Which of the following zones in a lake suffers from lack of light and therefore limited photosynthesis is able to take place?
A Pelagic
B Littoral
C Profundal
D Euphotic
The process through which excess of light energy is dissipated in photosynthesis is known as
A scavenging
B photolysis
C photophosphorylation
D quenching
Consider the electromagnetic radiations having wavelengths 200 nm, 500 nm and 1000 nm. Which wavelength (s) of the following can make visual sensation to a human eye?
A 200 nm and 500 nm
B 500 nm and 1000 nm
C 500 nm only
D 200 nm and 1000 nm
What do you call an attenuation that occurs over many different wavelengths of the carrier?
A Rayleigh fading
B Ricean fading
C Wavelength fading
D Slow fading

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