As per Kirchoff‟s law, the ratio of the total radiating power to the absorptivity of a body depends on the

Related MCQs

• The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoff‟s law.
• Depending on the radiating properties, a body will be white when (where a = absorptivity, p = reflectivity, x = transmissivity)
• Depending on the radiating properties, a body will be black when (where a = absorptivity, p == reflectivity, X = transmissivity.)
• Depending on the radiating properties, a body will be opaque when (where a = absorptivity, p = reflectivity, X = transmissivity.)
• Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity?
• "The ratio of the total emissive power to the absorptivity for all bodies is same at ther-mal equilibrium". This is __________ law.
• According to Kirchoff’s law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a
• When a body is in thermal equilibrium with its surroundings, the absorptivity and the emissivity of the body are same. This Law is known as
• If the absorptivity plus reflectivity of a body equals 1, then the body is known as
• Depending on the radiating properties, body will be transparent when