Radiant energy emitted from a blackbody is only a function of what?

Radiant energy emitted from a blackbody is only a function of what?
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ANSWER: TEMPERATURE
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To develop the correct mathematical description of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature, Planck found it necessary to assume that the molecular oscillators of the blackbody emitted and absorbed: w) no radiant energy x) radiant energy in discrete units or quanta y) radiant energy in a continuous form z) none of the above.

Description : To develop the correct mathematical description of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature, Planck found it necessary to assume that the molecular ... units or quanta y) radiant energy in a continuous form z) none of the above.

Last Answer : ANSWER: X -- RADIANT ENERGY IN DISCRETE UNITS OR QUANTA

The radiation emitted by a body as a result of its temperature.  a. Blackbody Radiation  b. Thermal Inversion  c. Thermionic Inversion  d. Thermal Radiation

Description : The radiation emitted by a body as a result of its temperature.  a. Blackbody Radiation  b. Thermal Inversion  c. Thermionic Inversion  d. Thermal Radiation

Last Answer : Thermal Radiation

The thermal radiation emitted by a blackbody heated to a given temperature.  a. Gamma Radiation  b. Black Body Radiation  c. Electromagnetic Radiation  d. Alpha Radiation

Description : The thermal radiation emitted by a blackbody heated to a given temperature.  a. Gamma Radiation  b. Black Body Radiation  c. Electromagnetic Radiation  d. Alpha Radiation

Last Answer : Black Body Radiation

Pick out the wrong statement: (A) With change in temperature, the radiant energy emitted by a black body remains unchanged (B) Absorptivity of a body approaches unity in case of diffuse reflection (C) Absorptivity of a perfectly black body is unity (D) Value of Stefan-Boltzmann constant is 4.876 × 10 -8 KCal/m2 .hr.°K4

Description : Pick out the wrong statement: (A) With change in temperature, the radiant energy emitted by a black body remains unchanged (B) Absorptivity of a body approaches unity in case of diffuse reflection (C) Absorptivity of ... unity (D) Value of Stefan-Boltzmann constant is 4.876 10 -8 KCal/m2 .hr.°K4

Last Answer : (A) With change in temperature, the radiant energy emitted by a black body remains unchanged

The wavelength at which the peak of intensity of blackbody radiation Occurs – (1) increases with increase in temperature (2) decreases with increase in temperature (3) is the same at all temperatures (4) does not follow any pattern as temperature changes

Description : The wavelength at which the peak of intensity of blackbody radiation Occurs – (1) increases with increase in temperature (2) decreases with increase in temperature (3) is the same at all temperatures (4) does not follow any pattern as temperature changes

Last Answer : (2) decreases with increase in temperature Explanation: According to Wien's displacement law, when the temperature of a blackbody radiator increases, the overall radiated energy increases. ... to its temperature. Shorter-wavelength (higher-frequency) light corresponds to higherenergy photons.

The wavelength at which the peak of intensity of blackbody radiation occurs (1) increases with increase in temperature (2) decreases with increase in temperature (3) is the same at all temperatures (4) does not follow any pattern as temperature changes

Description : The wavelength at which the peak of intensity of blackbody radiation occurs (1) increases with increase in temperature (2) decreases with increase in temperature (3) is the same at all temperatures (4) does not follow any pattern as temperature changes

Last Answer : decreases with increase in temperature

Energy stored in a body as thermal or internal energy consists of one of the following. Does it consist of: w) heat in the form of radiant energy x) molecular kinetic energy only y) molecular potential energy only z) both kinetic and potential energy

Description : Energy stored in a body as thermal or internal energy consists of one of the following. Does it consist of: w) heat in the form of radiant energy x) molecular kinetic energy only y) molecular potential energy only z) both kinetic and potential energy

Last Answer : ANSWER: Z -- BOTH KINETIC AND POTENTIAL ENERGY

The radiant energy having lowest energy is – (1) gamma rays (2) UV rays (3) visible light (4) microwave radiation

Description : The radiant energy having lowest energy is – (1) gamma rays (2) UV rays (3) visible light (4) microwave radiation

Last Answer : (4) microwave radiation Explanation: The parts of the electromagnetic spectrum, arranged from highest energy to lowest, are gamma rays, Xrays, Ultraviolet light, visible light, infrared light, microwaves, and radio waves.

Name the German theoretical physicist who was awarded the Nobel prize for his principle of radiation which states that radiant energy is composed of tiny bits of energy called quanta, the magnitude of which can be calculated by multiplying the frequency of the radiation times a universal constant?

Description : Name the German theoretical physicist who was awarded the Nobel prize for his principle of radiation which states that radiant energy is composed of tiny bits of energy called quanta, the magnitude of which can be calculated by multiplying the frequency of the radiation times a universal constant? 

Last Answer : ANSWER: (MAX) PLANCK

The radiant energy having lowest energy is (1) gamma rays (2) UV rays (3) visible light (4) microwave radiation

Description : The radiant energy having lowest energy is (1) gamma rays (2) UV rays (3) visible light (4) microwave radiation

Last Answer : microwave radiation 

What is a blackbody?

Description : What is a blackbody?

Last Answer : A blackbody is an idealized object that absorbs all radiation incident on it, and emits radiation with a spectral distribution that depends only on its temperature, and its properties are important in many areas of physics and engineering.

What is a blackbody?

Description : What is a blackbody?

Last Answer : A blackbody is an idealized object that absorbs all electromagnetic radiation that falls on it, and emits radiation in a spectrum that depends only on its temperature, as described by Planck's law.

An idealized perfect absorber and perfect emitter of radiation.  a. elastic material  b. transponder material  c. Teflon  d. blackbody

Description : An idealized perfect absorber and perfect emitter of radiation.  a. elastic material  b. transponder material  c. Teflon  d. blackbody

Last Answer : blackbody

The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Description : The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Last Answer : (3) Nuclear fusion Explanation: The spectrum of the Sun's solar radiation is close to that of a black body with a temperature of about 5,800 K. The Sun emits Electromagnetic radiation across ... converted to lower energy photons before they reach the Sun's surface and are emitted out into space.

The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Description : The energy emitted by the Sun is due to (1) Chemical reaction (2) Nuclear fission (3) Nuclear fusion (4) All of the above

Last Answer : Nuclear fusion

Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Description : Wollen clothes keep the body warm because – (1) Wool increases the temperature of the body (2) Wool is a had conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Last Answer : (2) Wool is a had conductor Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss because it is an ... have a greater bulk than other textiles, and retain air, which causes the product to retain heat.

Which of the following devices can be used to detect radiant heat? (1) Liquid thermometer (2) Six's maximum and minimum thermometer (3) Constant volume air thermometer (4) Thermopile

Description : Which of the following devices can be used to detect radiant heat? (1) Liquid thermometer (2) Six's maximum and minimum thermometer (3) Constant volume air thermometer (4) Thermopile

Last Answer : (4) Thermopile Explanation: Based on the thermoelectric effect, the thermopile can be used as a heat sensor to measure thermal radiation. A thermopile is made of thermocouple junction pairs connected electrically in series. Thermocouples near the ground measures radiant energy.

Which of the following devices can be used to detect radiant heat ? (1) Liquid thermometer (2) Six’s maximum and minimum thermometer (3) Constant volume air thermometer (4) Thermopile

Description : Which of the following devices can be used to detect radiant heat ? (1) Liquid thermometer (2) Six’s maximum and minimum thermometer (3) Constant volume air thermometer (4) Thermopile

Last Answer : Thermopile

Wollen clothes keep the body warm because (1) Wool increases the temperature of the body (2) Wool is a bad conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects

Description : Wollen clothes keep the body warm because (1) Wool increases the temperature of the body (2) Wool is a bad conductor (3) Wool absorbs radiant heat from outer objects (4) Wool rejects heat from the outer objects 

Last Answer :  Wool is a bad conductor

In which the radiant energy of the sun is transmitted? -Do You Know?

Description : In which the radiant energy of the sun is transmitted? -Do You Know?

Last Answer : answer:

The absorption of radiant energy causes

Description : The absorption of radiant energy causes

Last Answer : The absorption of radiant energy causes A. Reduction of chlorophyll B. Oxidation of Chlorophyll C. Absorption of `CO_(2)` D. Evolution of `O_(2)`

How does A light bulb converts 10 percent of the electrical energy it uses into radiant energy. Make a hypothesis about the other form of energy produced.?

Description : How does A light bulb converts 10 percent of the electrical energy it uses into radiant energy. Make a hypothesis about the other form of energy produced.?

Last Answer : Need answer

Radiant Heaters More Energy Efficient Than Forced Air Heat?

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The escape velocity from the earth’s surface is about 1. 30 km/sec 2. 6 km/sec 3. 11.2 km/sec 4. 300 km/sec 15. The radiant energy of the sun is due to (a) Nuclear fission (b) Nuclear fusion (c) Sinking of the sun (d) Violent explosions

Description : The escape velocity from the earth’s surface is about 1. 30 km/sec 2. 6 km/sec 3. 11.2 km/sec 4. 300 km/sec 15. The radiant energy of the sun is due to (a) Nuclear fission (b) Nuclear fusion (c) Sinking of the sun (d) Violent explosions

Last Answer : Ans:(c)

The solar radiation coming to Earth is called – (1) Radiant energy (2) Insolation (3) Sunshine (4) Terrestrial radiation

Description : The solar radiation coming to Earth is called – (1) Radiant energy (2) Insolation (3) Sunshine (4) Terrestrial radiation

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The process of photosynthesis involves conversion of (1) chemical energy into radiant energy (2) chemical energy into mechanical energy (3) solar energy into chemical energy (4) mechanical energy into solar energy

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Any energy which radiates in the form of radio waves, infrared waves, light waves, x-rays, etc. A. Radiant energy B. Electromagnetic C. Heat D. Ultraviolet

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In which the radiant energy of the sun is transmitted?

Description : In which the radiant energy of the sun is transmitted?

Last Answer : Short waves

What is the percentage of radiant energy reflected back by surface called?

Description : What is the percentage of radiant energy reflected back by surface called?

Last Answer : Albedo

Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be (A) 0.35 (B) 0.45 (C) 0.55 (D) 0.85

Description : Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be (A) 0.35 (B) 0.45 (C) 0.55 (D) 0.85

Last Answer : (B) 0.45

Which one of the following quantities forms the basis of radiometry? (A) Radiant energy (Q) (B) Radiant flux ( ) (C) Radiant intensity (I) (D) All of these

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Which one of the following statement is correct? (A) Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation (B) The rate of transfer of radiant energy is called flux and is expressed in watts (C) The radiant energy which falls upon a surface is termed as irradiance (D) All of these

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The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called: (A) Reflectance (B) Reflectance factor (C) Albedo (D) None of these

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It is the deposition of radiant energy as heat into an absorbing body.  a. Radiation  b. Ionization  c. Convection  d. Insolation

Description : It is the deposition of radiant energy as heat into an absorbing body.  a. Radiation  b. Ionization  c. Convection  d. Insolation

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It is an energy flux, equal to the rate of energy flow per unit area per unit time across some surface.  a. Irradiance  b. Radiant Intensity  c. Luminosity  d. Brightness

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What is the amount of radiant energy received each second over each square meter that is at right angles to the sun’s rays at the top of the atmosphere?  a. 1400 J  b. 6000 J  c. 10000 J  d. 800 J

Description : What is the amount of radiant energy received each second over each square meter that is at right angles to the sun’s rays at the top of the atmosphere?  a. 1400 J  b. 6000 J  c. 10000 J  d. 800 J

Last Answer : 1400 J

What is the smallest unit of radiant energy?

Description : What is the smallest unit of radiant energy?

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Practices using direct radiant energy of the sun a). Soil solarization b). Micro-waves c). Flaming d). All

Description : Practices using direct radiant energy of the sun a). Soil solarization b). Micro-waves c). Flaming d). All

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What percent of the total radiant energy received by a plant is converted to chemical energy? a) less than 2 b) 10 c) 50 d) 75

Description : What percent of the total radiant energy received by a plant is converted to chemical energy? a) less than 2 b) 10 c) 50 d) 75

Last Answer : ANSWER: A -- LESS THAN 2

1. Which vitamin is necessary for blood clotting? 2. Which can be abolished but not dissolved? 3. What does Talc contains? 4. What is the percentage of radiant energy reflected back by surface called? 5. Which place was famous as a seat of Mahayana learning?

Description : 1. Which vitamin is necessary for blood clotting? 2. Which can be abolished but not dissolved? 3. What does Talc contains? 4. What is the percentage of radiant energy reflected back by ... which countries? 20. The extent of the Delhi Sultanate empire was the greatest during which reign?

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Which of the following is not a renewable resourse ? (1) Thorium (2) Geothermal heat (3) Tidal power (4) Radiant energy (4) Dekke Toba fish - Brazil

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Last Answer : Thorium

The process of photosynthesis involves conversion of (1) chemical energy into radiant energy (2) chemical energy into mechanical energy (3) solar energy into chemical energy (4) mechanical energy into solar energy

Description : The process of photosynthesis involves conversion of (1) chemical energy into radiant energy (2) chemical energy into mechanical energy (3) solar energy into chemical energy (4) mechanical energy into solar energy

Last Answer :  solar energy into chemical energy

The solar radiation coming to Earth is called (1) Radiant energy (2) Insolation (3) Sunshine (4) Terrestrial radiation

Description : The solar radiation coming to Earth is called (1) Radiant energy (2) Insolation (3) Sunshine (4) Terrestrial radiation 

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Beta rays emitted by a radioactive material are – (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations

Description : Beta rays emitted by a radioactive material are – (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations

Last Answer : (2) Charged particles emitted by nucleus Explanation: A beta ray is a high-energy, highspeed electron (negatively charged) or positron (positively charged) emitted in the radioactive decay of an atomic nucleus, such as a potassium40 nucleus, in the process of beta decay.

In radio-communication, the signals emitted by transmitting antenna are reflected on – (1) stratosphere (2) ozonosphere (3) ionosphere (4) troposphere

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What is the color of light emitted from an Argon-Ion laser?

Description : What is the color of light emitted from an Argon-Ion laser?

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What name is given to the visible light emitted when charged particles pass through a transparent medium with a velocity exceeding the velocity of light in the medium?

Description : What name is given to the visible light emitted when charged particles pass through a transparent medium with a velocity exceeding the velocity of light in the medium?

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What is the wavelength of red light emitted by a helium-neon laser? w) 122 nanometers x) 633 nanometers y) 2.43 picometers z) 1.37 micrometers

Description : What is the wavelength of red light emitted by a helium-neon laser? w) 122 nanometers x) 633 nanometers y) 2.43 picometers z) 1.37 micrometers

Last Answer : ANSWER: X -- 633 NANOMETERS (actually 632.8 nm)

In the Compton effect, a photon of wavelength l (read: lambdw) collides with a stationary electron. The wavelength of the emitted photon is: w) longer than l x) shorter than l y) the same as l z) no photon is emitted

Description : In the Compton effect, a photon of wavelength l (read: lambdw) collides with a stationary electron. The wavelength of the emitted photon is: w) longer than l x) shorter than l y) the same as l z) no photon is emitted

Last Answer : ANSWER: W -- LONGER THAN l

When a fast charged particle traverses a dielectric medium at a velocity exceeding the velocity of light in that medium, radiation is emitted. This radiation is known as: w) point radiation x) Cerenkov radiation y) Synchrotron radiation z) Bremsstrahlung

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Last Answer : ANSWER: X -- CERENKOV RADIATION