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Yash dayal
Yash dayal
Asked: January 18, 2025In: Class-11-Physics

What is a black body? How can it be realised in practice?

Thermal refers to the heat energy within a system and its transfer due to temperature differences. It involves concepts like heat conduction convection and radiation. Thermal properties include how substances expand or contract with temperature changes. These properties are essential ...

class 11 physicsthermalthermal properties of matter
  • 1 1 Answer
  • 31 Views
  • 1 Vote
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Yash dayal
Yash dayal
Asked: January 18, 2025In: Class-11-Physics

Define the terms absorptive power, emissive power and emissivity.

Power is the rate at which work is done or energy is transferred. It is defined as the amount of work done per unit time. The SI unit of power is the watt (W) where 1 watt is equal to ...

class 11 physicspowerthermal properties of matter
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Yash dayal
Yash dayal
Asked: January 18, 2025In: Class-11-Physics

State Newton’s law of cooling. Express it mathematically. How can this law be verified experimentally?

A law is a principle that describes a consistent relationship or pattern observed in nature. It is based on repeated experimental evidence and remains universally valid under specified conditions. Laws explain natural phenomena and predict outcomes without exceptions or deviations. Thermal ...

class 11 physicslawthermal properties of matter
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Yash dayal
Yash dayal
Asked: January 18, 2025In: Class-11-Physics

What are electromagnetic waves? In what respect is the thermal radiation different from light?

Electromagnetic refers to the interaction of electric and magnetic fields. These fields are interrelated and travel as waves through space. Electromagnetic waves include light radio waves microwaves and X-rays. They play a crucial role in communication and energy transfer. The ...

class 11 physicselectromagneticthermal properties of matter
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Yash dayal
Yash dayal
Asked: January 18, 2025In: Class-11-Physics

Describe some of the phenomena which are based on thermal convection.

Phenomena refer to observable events or occurrences that can be studied or analyzed. In science, it refers to natural processes or facts that can be observed, measured, and explained. These can include physical, chemical, or biological events, such as changes ...

class 11 physicsphenomenathermal properties of matter
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