When will a hot body radiate maximum energy?

When will a hot body radiate maximum energy?
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1 Answer

Answer :

If its surface is black
and rough
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When will a hot body radiate maximum energy? -General Knowledge

Description : When will a hot body radiate maximum energy? -General Knowledge

Last Answer : answer:

When will a hot body radiate maximum energy? -General Knowledge

Description : When will a hot body radiate maximum energy? -General Knowledge

Last Answer : answer:

A hot body will radiate heat most rapidly, if its surface is (A) White & rough (B) Black & rough (C) White & polished (D) Black & polished

Description : A hot body will radiate heat most rapidly, if its surface is (A) White & rough (B) Black & rough (C) White & polished (D) Black & polished

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At what temperature a body will not radiate any heat energy? (1) 0° C (2) 273° C (3) 100° C (4) -273° C

Description : At what temperature a body will not radiate any heat energy? (1) 0° C (2) 273° C (3) 100° C (4) -273° C

Last Answer : (4) -273° C

Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping

Description : Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping

Last Answer : (4) prevent the heat of the body from escaping Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss ... heat from our body gets trapped inside the clothes which makes us feels warmer with the clothes.

Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping

Description : Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping

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The fields surrounding the antenna do not collapse their energy back into the antenna but rather radiate it out in space

Description : The fields surrounding the antenna do not collapse their energy back into the antenna but rather radiate it out in space

Last Answer : radiation field

Why does ETA radiate so much terror?

Description : Why does ETA radiate so much terror?

Last Answer : Because they’re basically terrorists, and rather prolific ones at that? Like any other group like that some view them as freedom fighters, some view them as terrorists.

where does the kidney hurt, where does the pain radiate?

Description : Where exactly does the kidney hurt? Can he believe that only a man's waist hurts? 

Last Answer : To my knowledge, kidney pain occurs above the buttocks and around the spine on 2 sides of the spine. It's easy to confuse it with other low back pain, but if you have something with your kidneys ... pain usually occurs as a result of movement, and kidney pain also occurs by tapping the waist.   

Does a lighted mouse radiate?

Description : We have a new mouse at home on a PC that glows red and in the evening it lights up half the room. Can't the light from the mouse radiate something when used in the body?

Last Answer : I have been working on a PC for several years and my hands are working. And I have a damn very luminous rat.

Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Description : Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Last Answer : (3) Reflect back the heat given by earth Explanation: It is because the night side of Earth will radiate infra-red radiation (heat) back into space. When there is cloud cover, the clouds act like a blanket and trap the heat close to the ground just like a blanket traps heat close to our body.

A disadvantage of using a trap antenna. A. It will radiate harmonics B. It can only be used for single-bad operation C. It is too sharply directional at lower frequencies D. It must be neutralized

Description : A disadvantage of using a trap antenna. A. It will radiate harmonics B. It can only be used for single-bad operation C. It is too sharply directional at lower frequencies D. It must be neutralized

Last Answer : A. It will radiate harmonics

To radiate power efficiently, a long-wire antenna must have what minimum overall length?

Description : To radiate power efficiently, a long-wire antenna must have what minimum overall length?

Last Answer : One-half wavelength.

Short-circuited stubs are preferred to open-circuited stubs because thelatter are a. more difficult to make an connect b. made of a transmission line with a different characteristic impedance c. liable to radiate

Description : Short-circuited stubs are preferred to open-circuited stubs because thelatter are a. more difficult to make an connect b. made of a transmission line with a different characteristic impedance c. liable to radiate

Last Answer : c. liable to radiate

The cloudy nights are warmer compared to clear nights (without clouds) during winter days. This is because: (A) clouds radiate heat towards the earth (B) clouds prevent cold wave from the sky, descend on earth (C) clouds prevent escaping of the heat radiation from the earth (D) clouds being at great heights from earth absorb heat from the sun and send towards the earth

Description : The cloudy nights are warmer compared to clear nights (without clouds) during winter days. This is because: (A) clouds radiate heat towards the earth (B) clouds prevent cold wave from the sky, ... (D) clouds being at great heights from earth absorb heat from the sun and send towards the earth

Last Answer : (C) clouds prevent escaping of the heat radiation from the earth

Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Description : Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Last Answer : reflect back the heat given by earth

Choose the most appropriate statement (A) An antenna can radiate only HF signals

Description : Choose the most appropriate statement (A) An antenna can radiate only HF signals (B) An antenna can radiate and receive HF signals (C) An antenna can receive only HF signals (D) An antenna can receive and transmit simultaneously HF signals

Last Answer : Choose the most appropriate statement (A) An antenna can radiate only HF signals (B) An antenna can radiate and receive HF signals (C) An antenna can receive only HF signals (D) An antenna can receive and transmit simultaneously HF signals

For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be  (a) zero  (b) minimum  (d) maximum  (d) infinity  (e) there is no such criterion.

Description : For a thermodynamic process to be reversible, the temperature difference between hot body and working substance should be  (a) zero  (b) minimum  (d) maximum  (d) infinity  (e) there is no such criterion.

Last Answer : Answer : a