Why a solar cooker painted black form outside? -Science

Why a solar cooker painted black form outside? -Science
by

1 Answer

Answer :

Black surface absorbs more heat as compared to white or reflecting surface under identical conditions.
by

Related questions

Solar cooker takes more time as compared to the LPG to boil potato or rice, yet Kunal uses solar cooker for such type of cooking: (i) Why does Kunal uses Solar cooker instead of LPG? Give reasons for your answer. (ii) Name the phenomenon which is responsible for obtaining high temperature in solar cooker. -Science

Description : Solar cooker takes more time as compared to the LPG to boil potato or rice, yet Kunal uses solar cooker for such type of cooking: (i) Why does Kunal uses Solar cooker instead of LPG? ... answer. (ii) Name the phenomenon which is responsible for obtaining high temperature in solar cooker. -Science

Last Answer : (a)(i) There are no energy losses while cooking on the solar cooker as the food gets cooked in a controlled environment whereas cooking on the LPG leads to maximum percentage of energy loss. ( ... saves a lot of prestigious time which is normally consumed for cooking purpose. (b) Greenhouse effect.

The large plates of solar pannels are painted? A. Red B. White C. Yellow D. Black (Answer)

Description : The large plates of solar pannels are painted? A. Red B. White C. Yellow D. Black (Answer)

Last Answer : D. Black (Answer)

Hot coffee is poured simultaneously in four metallic tumblers painted outside with different types of paints. After some time, the coffee will be found coldest in the tumbler painted (a) rough white (b) shining white (c) rough black (d) shining black

Description : Hot coffee is poured simultaneously in four metallic tumblers painted outside with different types of paints. After some time, the coffee will be found coldest in the tumbler painted (a) rough white (b) shining white (c) rough black (d) shining black

Last Answer : Ans:(c)

Why are the solar panels usually painted black?

Description : Why are the solar panels usually painted black?

Last Answer : If they are PV panels or heat pipe panels, they are not paintedat all, paint would stop them working.Only a simple hot water radiator panel would be painted blackand you would do this because the colour black absorbs all solarradiation, other colours reflect some of the suns energy.

The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Description : The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Last Answer : ANSWER: C

The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Description : The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Last Answer : ANSWER: C

The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Description : The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Last Answer : ANSWER: C

The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Description : The large plates of solar panels are painted _____. A. White B. Yellow C. Black D. Red

Last Answer : ANSWER: C

In which of the following is a concave mirror used? (a) A solar cooker (b) A rear view mirror in vehicles (c) A safety mirror in shopping malls (d) In Viewing full size image of distant tall buildings.

Description : In which of the following is a concave mirror used? (a) A solar cooker (b) A rear view mirror in vehicles (c) A safety mirror in shopping malls (d) In Viewing full size image of distant tall buildings.

Last Answer : Answer : (a)

Mention the purpose of blackening the interior of a solar cooker. -Biology

Description : Mention the purpose of blackening the interior of a solar cooker. -Biology

Last Answer : The purpose of blackening the interior of a solar cooker is that the black surface absorbs more heat radiations of incident solar energy (about 98%) as compare to white or other light coloured surface

Which mirror is used in solar cooker ?

Description : Which mirror is used in solar cooker ?

Last Answer : Concave mirrors are used in solar cookers.

How to use a solar cooker?

Description : How to use a solar cooker?

Last Answer : Solar cooker works on the sunlight. Sunlight warms the pot. Which is used for cooking the food. Cocave mirror are used in these types of cookers because these mirrors reflect sunlight into a single focal point ... in a solar cooker:- Rice 45 minutes to one hour,vegetable (about one to two hours) etc

The group of solar cells joined together in a definite pattern is called a – (1) Battery (2) Solar heater (3) Solar cooker (4) Solar cell panel

Description : The group of solar cells joined together in a definite pattern is called a – (1) Battery (2) Solar heater (3) Solar cooker (4) Solar cell panel

Last Answer : (4) Solar cell panel Explanation: A single solar cell can produce only a small amount of electricity. In those cases where more electrical power is needed, a large number of solar cells are joined ... a solar cell panel consists of a large number of solar cells joined together in a definite pattern.

Which of the following parts of the sunlight makes the solar cooker hot? (1) Ultra violet (2) Red light (3) Infra red (4) Cosmic rays

Description : Which of the following parts of the sunlight makes the solar cooker hot? (1) Ultra violet (2) Red light (3) Infra red (4) Cosmic rays

Last Answer : (3) Infra red Explanation: Glass transmits visible light but blocks infrared thermal radiation from escaping. This amplifies the heat trapping effect. A solar cooker, or solar oven, is a device which ... The vast majority of the solar cookers presently in use are relatively cheap, low-tech devices.

The group of solar cells joined together in a definite pattern is called a (1) Battery (2) Solar heater (3) Solar cooker (4) Solar cell panel

Description : The group of solar cells joined together in a definite pattern is called a (1) Battery (2) Solar heater (3) Solar cooker (4) Solar cell panel

Last Answer : Solar cell panel

Which of the following parts of the sunlight makes the solar cooker hot ? (1) Ultra violet (2) Red light (3) Infra red (4) Cosmic rays

Description : Which of the following parts of the sunlight makes the solar cooker hot ? (1) Ultra violet (2) Red light (3) Infra red (4) Cosmic rays

Last Answer : Infra red

Green House Effect' means (1) Pollution in houses in tropical region (2) Prevention of ultraviolet radiation by the ozone layer (3) Trapping of solar energy due to atmospheric gases (4) Damage to green painted buildings

Description : Green House Effect' means (1) Pollution in houses in tropical region (2) Prevention of ultraviolet radiation by the ozone layer (3) Trapping of solar energy due to atmospheric gases (4) Damage to green painted buildings

Last Answer : (3) Trapping of solar energy due to atmospheric gases Explanation: The greenhouse effect occurs when Earth's atmosphere traps solar radiation because of the presence of certain gases, causing the ... , nitrous oxide (N2O) and other gases, ac-cording to the Environmental Protection Agency (EPA

Green House Effect’ means (1) Pollution in houses in tropical region (2) Prevention of ultraviolet radiation by the ozone layer (3) Trapping of solar energy due to atmospheric gases (4) Damage to green painted buildings

Description : Green House Effect’ means (1) Pollution in houses in tropical region (2) Prevention of ultraviolet radiation by the ozone layer (3) Trapping of solar energy due to atmospheric gases (4) Damage to green painted buildings

Last Answer : Trapping of solar energy due to atmospheric gases

A black dog stands in the middle of an intersecton in a town painted black. None of the street lights are working due to a power failure caused by a storm. A car with two broken headlights drives towards the dog but turns in time to avoid hitting him. How could the driver have seen the dog in time? -Riddles

Description : A black dog stands in the middle of an intersecton in a town painted black. None of the street lights are working due to a power failure caused by a storm. A car with two broken headlights drives ... turns in time to avoid hitting him. How could the driver have seen the dog in time? -Riddles

Last Answer : Who said this happened during the night?

Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint. (A) Black (B) White (C) Red (D) Yellow

Description : Tanks used for the storage of petroleum products (which are inflammable) should be painted with a __________ paint. (A) Black (B) White (C) Red (D) Yellow

Last Answer : (B) White

The thermal radiation emitted by a body is proportional to T n , where T is its absolute temperature. The value of 'n' is exactly 4 for (A) Black painted bodies only (B) All bodies (C) Polished bodies only (D) A black body

Description : The thermal radiation emitted by a body is proportional to T n , where T is its absolute temperature. The value of 'n' is exactly 4 for (A) Black painted bodies only (B) All bodies (C) Polished bodies only (D) A black body

Last Answer : (B) All bodies

A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun? (A) Yellow paint (B) White paint (C) Black paint (D) Grey paint

Description : A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun? (A) Yellow paint (B) White paint (C) Black paint (D) Grey paint

Last Answer : (C) Black paint

A black surface absorbs more heat radiations as compared to a white or a reflecting surface under identical conditions. List two solar devices which make use of this property in their design. -Science

Description : A black surface absorbs more heat radiations as compared to a white or a reflecting surface under identical conditions. List two solar devices which make use of this property in their design. -Science

Last Answer : Solar cooker, solar water heater.

Does anyone believe we will ever be able to travel outside of our solar system?

Description : Does anyone believe we will ever be able to travel outside of our solar system?

Last Answer : one day,in the future, it can happen…. I’m hoping it will

External noise originating outside the solar system A. Cosmic noise B. Solar noise C. Thermal noise D. Lunar noise

Description : External noise originating outside the solar system A. Cosmic noise B. Solar noise C. Thermal noise D. Lunar noise

Last Answer : A. Cosmic noise

Why is it easier to cook in a pressure cooker? (a) High pressure creates turbulence (b) More steam is formed inside the cooker (c) Boiling point of water is raised (d) Boiling point of water is lowered

Description : Why is it easier to cook in a pressure cooker? (a) High pressure creates turbulence (b) More steam is formed inside the cooker (c) Boiling point of water is raised (d) Boiling point of water is lowered

Last Answer : Ans:(c)

Of the four locations mentioned below, the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open (a) At sea level (b) At the top of Mt Everest (c) At a place in a valley below sea level (d) In an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level

Description : Of the four locations mentioned below, the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open (a) At sea level (b) At the top of Mt Everest (c) ... ) In an aeroplane flying at a height of 10,000 m with inside pressure maintained at the sea level

Last Answer : Ans:(c)

A small weight put on the pressure cooker increases the pressure of the steam because (a) It is air tight (b) The area of contact is very small (c) The density of metal is very high (d) The pressure builds up irrespective of the weight placed

Description : A small weight put on the pressure cooker increases the pressure of the steam because (a) It is air tight (b) The area of contact is very small (c) The density of metal is very high (d) The pressure builds up irrespective of the weight placed

Last Answer : Ans:(b)

Do you have a pressure cooker recipe you'd like to share?

Description : Do you have a pressure cooker recipe you'd like to share?

Last Answer : https://realhousemoms.com/25-pressure-cooker-recipes/

Do you use a slow cooker (aka "crock pot") and if so, what do you make with it?

Description : Do you use a slow cooker (aka "crock pot") and if so, what do you make with it?

Last Answer : Chili, chicken & sauerkraut, corned beef & cabbage and pot roast.

Chicken and potato slow cooker instructions? (details inside )

Description : Chicken and potato slow cooker instructions? (details inside )

Last Answer : Its a crock-pot. sorry.

Do you own a pressure canner/cooker?

Description : Do you own a pressure canner/cooker?

Last Answer : We have one, and it's ancient. The wife inherited from her mom. We (the wife in truth) use it far less now in favor of the electric crock pot. I often think that those with cooking skills very ... of you with such, tendencies let me warn you now that the gods have a nasty habit of getting even.

How much rice does a rice cooker cook/?

Description : How much rice does a rice cooker cook/?

Last Answer : They come in different sizes. I have one, but I rarely use it. Some people swear by them for perfect rice every time. I’m lazy about taking extra appliances out of the cabinet.

Slow-Cooker Question: How long on warm setting?

Description : Slow-Cooker Question: How long on warm setting?

Last Answer : If “warm” is the low setting then you can have it on that for many hours.

Any tips/ recipes for a slow-cooker?

Description : Any tips/ recipes for a slow-cooker?

Last Answer : Beef ribs with BBQ sauce. For 6 to 10 hours. Comes out soft and flaky. You can eat all of the meat and sinew.

Old Bay Recipes for an electric pressure cooker?

Description : Old Bay Recipes for an electric pressure cooker?

Last Answer : answer:Yes, electric pressure cookers are becoming increasingly common nowadays. I'm not personally a fan of Old Bay but I understand it's pretty strong and can be easily overpowering, especially for ... don't miss the lower amounts of all types of seasonings that I typically use in recipes.

Will you share your uncomplicated slow cooker recipes with me? (Also an additional question about this CrockPot)

Description : Will you share your uncomplicated slow cooker recipes with me? (Also an additional question about this CrockPot)

Last Answer : The plastic smell is probably the heating element being used for the first time. The food should be fine. if they're meat eaters throw a roast in with a can of condensed soup, usually cream of mushroom ... get a feel for it. And try to resist opening it too often. it really slows the cooking time.

What is your favorite crock pot recipe or slow cooker recipe?

Description : What is your favorite crock pot recipe or slow cooker recipe?

Last Answer : I do really, really easy things in mine. I throw porkchops and a jar of salsa in on slow for 10 hours for zesty porkchops. I throw chicken breasts and a can of cream of mushroom soup or a can of cream of ... on slow for 10 hours. I do this before I leave for work and it's ready when I get home.

Anybody here own/use an Electronic Pressure Cooker ?

Description : Anybody here own/use an Electronic Pressure Cooker ?

Last Answer : I can share my friend's experiences. She bought one of the really large and expensive stove top pressure canners because she cans a whack load of veggies. She found that the high temperatures overcooked ... so much that she didn't like it. She stopped pressure canning and took up fermenting instead.

What's a good appetizer or side dish to utilize a slow cooker at a summer party?

Description : What's a good appetizer or side dish to utilize a slow cooker at a summer party?

Last Answer : Other than chili, which doesn’t seem like hot weather food to me, it’s hard to think of anything. Do you want my recipe for magic black and white bean salad with a lime/cilantro vinaigrette that you can expand to feed the multitudes? (And make in advance.) That’s my staple for summertime parties.

Any suggestions for non-rice applications for a rice cooker?

Description : Any suggestions for non-rice applications for a rice cooker?

Last Answer : What brand is the rice cooker because different ones do different things, I have the zojirushi and I can add other things along with the rice and it has a setting to cook basically what turns out to be a yummy rice meal

Where can I find a rice-cooker that does not have a teflon or non-stick pot?

Description : Where can I find a rice-cooker that does not have a teflon or non-stick pot?

Last Answer : answer:http://www.pleasanthillgrain.com/stainless_steel_rice_cooker_stainless_rice_cooker_cookers.aspx This company has lots of cool stuff besides rice cookers, so check it out. However but I'm sure it's not the ... cooker . Try other searches such as teflon free rice cooker , or similar options.

****, chicken and a pressure cooker?

Description : Beer, chicken and a pressure cooker?

Last Answer : Here is a recipe for BBQ chicken made with beer in the pressure cooker. Sounds delicious!

Recipe ideas without a proper cooker?

Description : Recipe ideas without a proper cooker?

Last Answer : Microwaves are ideal for cooking vegetables or boiling potatoes, so there is no excuse for a diet of sausage and chips. Considering your location, might I suggest black pudding or tripe as an accompaniment. They sell them on the market next to Reidy’s.

What are some good things to make in a slow cooker?

Description : What are some good things to make in a slow cooker?

Last Answer : Look for some recipes for bean stews, herbed lentil and rice dishes, etc. There are some very nice dishes along these lines.

Do I need a rice cooker?

Description : Do I need a rice cooker?

Last Answer : Nothing. Waste of materials, manufacturing and money.

How to cook rice in a GE rice cooker?

Description : How to cook rice in a GE rice cooker?

Last Answer : I love rice. My cousins are Japanese. Means nothing, but, when I cook up a pot of rice, the ratio is 2 to 1. That is, a simple sauce pan of, say two cups of water, brought to boil. Add your ONE ... know it helped Me to write this schtick!! 2 to 1 that's the basic. Thank You Flutherr-group!! Yes!!

If a crockpot/slow cooker recipe says to cook something on low for 4-6 hours, is it fine to leave it on for more like 8-10?

Description : If a crockpot/slow cooker recipe says to cook something on low for 4-6 hours, is it fine to leave it on for more like 8-10?

Last Answer : Not if the directions specify low for 4–6 hours. If it said high 4–6 hours then yes you could cook it on low 8–10. If they say low and you cook it double the time, expect a very dry, possibly burnt meal.

What's the perfect slow cooker?

Description : What's the perfect slow cooker?

Last Answer : answer:I have a huge crock pot..made by Rival, which I love. After each use, I would throw the pot in the dishwasher (oops I am not supposed to/the instructions said it is not ... and the other crock pots. http://southernfood.about.com/od/toppicks/tp/tpcrockpots.htm Happy Crock-potting :)