Description : Sodium fluorescein: a. has a higher affinity for plasma protein than indocyanine green. b. does not leak from the choroidal vasculature. c. does not leak from normal retinal vasculature. d. emits light of longer wavelengths than the one it absorbs
Last Answer : does not leak from normal retinal vasculature.
Description : Which of the following plant pigments absorbs in red and far-red region of light? (1) Carotenoide (2) Chlorophyll (3) Phytochrome (4) elyptochrome
Last Answer : (3) Phytochrome Explanation: Phytochrorne is a photoreceptor, a pigment that plants use to detect light. It is a protein with a bilin chromophore. It detects mainly red and far-red region of the visible spectrum and regulates germination of seeds.
Description : Which pigment absorbs the red and far-red light? (a) Cytochrome (b) Phytochrome (c) Carotenoids (d) Chlorophyll
Last Answer : (b) Phytochrome
Description : Which of the following plant pigments absorbs in red and farred region of light? (1) Carotenoide (2) Chlorophyll (3) Phytochrome (4) Cryptochrome
Last Answer : Phytochrome
Description : A dye absorbs a photon of wavelength `lambda` and re`-` emits the same energy into two phorons of wavelengths `lambda_(1)` and `lambda_(2)` respective
Last Answer : A dye absorbs a photon of wavelength `lambda` and re`-` emits the same energy into two phorons of wavelengths ` ... 2))/((lambda_(1)+lambda_(2))^(2))`
Description : A perfectly black body: (A) Is a diffuse emitter (B) Absorbs all the radiations of every wave lengths (C) Emits power of every wave length (D) All the above
Last Answer : Answer: Option D
Description : A hydrogen like gas emits radiation of wavelengths `460 Å, 828 Å` and `1035Å`, only. Assume thar the atoms have only two excited states and the differ
Last Answer : A hydrogen like gas emits radiation of wavelengths `460 Å, 828 Å` and `1035Å`, only. Assume ... of the ground state and the first excited state.
Description : Find the quantum number `n` corresponding to the excited state of `He^(+)` ion, if on transition to the ground state that ion emits two photons in suc
Last Answer : Find the quantum number `n` corresponding to the excited state of `He^(+)` ion, if on transition to the ... with wave lengths `108.5` and `30.4 nm`.
Description : When the ground gets warm it emits an invisible type of light called infrared light. This light can travel into the atmosphere and heat the air that it encounters.?
Last Answer : Some parts of the air - the so-called green-house gasses. Notthe more common parts of the air.
Description : What is the The chemical part of the dye that absorbs light and produces colour called? -Do You Know?
Last Answer : answer:
Description : Electrons from excited chlorophyll molecule of photosystem II are accepted first by
Last Answer : Electrons from excited chlorophyll molecule of photosystem II are accepted first by A. Quinone B. Ferredoxin C. Cytochrome-b D. Cytochrome-f
Description : The first acceptor of electrons from an excited chlorophyll molecule of phtosystem II is
Last Answer : The first acceptor of electrons from an excited chlorophyll molecule of phtosystem II is A. Quinone B. Cytochorme C. Iron-sulfur protein D. Ferredoxin
Description : The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is (a) iron-sulphur protein(b) ferredoxin (c) quinone (d) cytochrome.
Last Answer : (c) quinone
Description : Electrons from excited chlorophyll molecule of photosystem II are accepted first by (a) quinone (b) ferredoxin (c) cytochrome-b (d) cytochrome-f.
Last Answer : (a) quinone
Description : If by mistake radioactive substance gets into human body, then from the point of view of radiation damage, the most harmful will be one that emits.
Last Answer : If by mistake radioactive substance gets into human body, then from the point of view of radiation damage, ... neutrons C. `beta`-rays D. `alpha`-rays
Description : Is there any particular weather that gets you really excited?
Last Answer : I get excited over severe weather threats. I always feel a tiny bit guilty admitting that, but I'd be lying if I said I didn't. If there is a chance of a severe thunderstorm or it is a ... day and there is a potential tornado brewing I am like a kid at Christmas. Excited is an understatement.
Last Answer : : Eyes.
Description : An electron collides with a fixed hydrogen atom in its ground state. Hydrogen atom gets excited and the colliding electron loses all its kinetic energ
Last Answer : An electron collides with a fixed hydrogen atom in its ground state. Hydrogen atom gets excited and the colliding ... eV C. 12.1 eV D. 13.6 eV
Description : What electronic accessory item emits blue light at one end of it?
Last Answer : answer:Could you post a photo? Are there any markings on it? Many Bluetooth accessories, such as wireless earpieces for cell phones, have a blue LED.
Description : What is a neutron star which a Emits radiation that reaches the earth as radio waves and flashes of visible light?
Last Answer : pulsar
Description : Sun appears red in colour at sun-rise and sunset due to – (1) the fact that sun emits only red colour at that time (2) red light having longer wave length scatters away (3) that sun Comes out of the mountains (4) that all other colours scatter away except red
Last Answer : (4) that all other colours scatter away except red Explanation: According to Rayleigh's law, the intensity of scattered light varies inversely as the fourth power of its wavelength. Sunlight consists of ... have to travel a larger part of the atmosphere because they are very close to the horizon.
Description : Every hot object emits – (1) X-rays (2) Visible light (3) Infrared rays (4) Ultraviolet rays
Last Answer : (3) Infrared rays
Description : Which laser emits light in the visible range 400 to 700 nm? a. Argon-ion b. Nitrogen c. Carbon-dioxide d. Neodymium-YAG
Last Answer : a. Argon-ion
Description : The form of Phosphorous which emits green light on the exposure to atmosphere ?
Last Answer : White phosphorous
Description : A pulsar is a rapidly spinning neutron star which emits: A. A blinding light when it aligns with the planets B. Radio waves detectable from Earth (Answer) C. A gravitational pull which attracts high energy dust particles D. Enough energy to power itself indefinitely
Last Answer : B. Radio waves detectable from Earth (Answer)
Description : A pn-junction diode emits light by spontaneous emission ∙ A. LED ∙ B. APD ∙ C. PIN
Last Answer : A. LED
Description : Which laser emits light in the visible range 400 to 700 nm? ∙ a. Argon-ion ∙ b. Nitrogen ∙ c. Carbon-dioxide ∙ d. Neodymium-YAG
Description : A light emitting diode emits light only when (a) Reversed biased (b) forward biased (c) unbiased (d) none
Last Answer : (b) forward biased
Description : Every hot object emits _____ (1) X–rays (2) Visible light (3) Infrared rays (4) Ultraviolet rays
Last Answer : Infrared rays
Description : Sun appears red in colour at sunrise and sunset due to (1) the fact that sun emits only red colour at that time (2) red light having longer wave length scatters away (3) that sun comes out of the mountains (4) that all other colours scatter away except red
Last Answer : that all other colours scatter away except red
Description : LED emits light : - a) only in RED color b) only in YELLOW color c) only in GREEN color d) In RED, GREEN, YELLOW and AMBER color
Last Answer : LED emits light : - In RED, GREEN, YELLOW and AMBER color
Description : What does an object look like when it absorbs all the light ?
Last Answer : An object appears black when it absorbs all the light.
Last Answer : Black absorbs more light.
Description : (a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) complex absorbing light to lower wave
Last Answer : (a) `[Ti(H_(2)O)_(6)]^(3+)` absorbs light of wavelength 5000Å. Name one ligand which would form a titanium (III) ... ^(3+)" " (iv) [Pd(en)_(2)]^(2+)`
Description : What plant organ absorbs the most light for photosynthesis?
Last Answer : the chloroplast
Description : What would happen if gases absorbs visible light?
Last Answer : Earth's atmosphere does have greenhouse gases. These gases absorb some of the infrared radiation emitted by Earth's surface. If it did not, Earth would grow warmer and warmer as it absorbed more and more solar radiation. Greenhouse gas molecules absorb and emit infrared radiation.
Description : A pl ant leaf appears to be green because it (a) Absorbs green light (b) Reflects all but yellow and blue light (c) Reflects green light (d) Absorbs red and yellow light
Last Answer : Ans:(c)
Description : Which surface absorbs all forms of light and heat?
Last Answer : black surface
Description : A pigment which absorbs red and far-red light is (a) cytochrome (b) xanthophyll (c) phytochrome (d) carotene.
Last Answer : (c) phytochrome
Description : What is the The chemical part of the dye that absorbs light and produces colour called?
Last Answer : pigment
Description : The wavelength of light most absorbed by chlorophyll-a during photosynthesis is
Last Answer : The wavelength of light most absorbed by chlorophyll-a during photosynthesis is A. 460 nm B. 500 nm C. 600 nm D. 660 nm
Last Answer : The wavelength of light most absorbed by chlorophyll-a during photosynthesis is A. 400 nm B. 550 nm C. 660 nm D. 700 nm
Description : What are light-absorbing molecules such as chlorophyll called?
Last Answer : Feel Free to Answer
Description : Moll’s experiment explains that (a) Carbon dioxide is essential for photosynthesis (b) Chlorophyll and water are necessary for photosynthesis (c) Light and water are essential for photosynthesis (d) All of the above are correct
Last Answer : Ans. ((a))
Description : Consider the following statements and select the correct answer from the codes given below: 1. Viruses are obligate parasites and cannot be cultured on a synthetic medium 2. The red snow phenomenon observed in some alpine and arctic regions is ... (a) 1, 2 and 4 (b) 2 and 4 (c) 2 and 3 (d) 1 and 3
Last Answer : Ans:(d)
Description : Plants receive their nutrients mainly from (a) Chlorophyll (b) Atmosphere (c) Light (d) Soil
Description : Bacteria do not need sunlight to grow because (a) They lack chlorophyll and so they are incapable of making their own food (b) They hate sunlight (c) They use other kinds of light for their food synthesis (d) They prepare their food without the help of sunlight
Description : Which components of light are absorbed by chlorophyll? (1) Violet and red (2) Indigo and orange (3) Blue and red (4) Violet and yellow
Last Answer : (1) Violet and red Explanation: Chlorophyll is a green pigment found in cyanobacteria and the chloroplasts of algae and plants. Chlorophyll is an extremely important biornolecule, critical in ... and near-green portions of the spectrum, hence the green color of chlorophyll-containing tissues.