Explanation

• the transfer of heat when waves or rays are dispersed from an object called Radiation
• ***
• different methods of heat transfer
• Conduction is heat transfer through stationary matter by physical contact. 
• Convection is the heat transfer by the macroscopic movement of a fluid.
• Heat transfer by radiation occurs when microwaves, infrared radiation, visible light, or another form of electromagnetic radiation is emitted or absorbed.

Explanation

The formula for resistance is R = V/I.

This formula is derived from Ohm's law,

which states that the electrical resistance of a circuit is the ratio between the voltage applied to the current flowing through it

Explanation

- 1 electron volt (eV) is a unit of energy commonly used in atomic and particle physics.  

- It is the energy gained or lost by an electron when it moves through a potential difference of 1 volt.  

- 1 eV = 1.6 × 10⁻¹⁹ Joules.  

- It helps measure very small energy changes at the atomic scale.

Explanation

• Coal, fossil fuels, crude oil, natural gas, etc are all hydrocarbon fuels.
• These are called as non-renewable source of energy because they take millions of years to regenerate themselves.
• Water energy is renewable because it is regenerated by water cycle.
• Also wind energy and solar energy are renewable sources of energy.

Explanation

The output voltage of transformer is greater than input voltage.

then it is known as step up transformer.

Explanation

The Indian Space Research Organization (ISRO)  is the national space agency of India.

Explanation

The most popular renewable energy sources currently are:

1.      Solar energy

2.      Wind energy

3.      Hydro energy

4.      Tidal energy

5.      Geothermal energy

6.      Biomass energy

Explanation

The roadway would cause diffuse reflection due to its rough surface

some examples where diffused reflection

• Desert sand,
• disturbed water surface,
• and rough roads  
  

Explanation

Non-renewable energy sources:

• Oil
  
• Nuclear energy
• Petroleum
• Natural gas & coal

Renewable sources of energy:

• Solar energy
• Wind energy
• Hydroelectric power
• Biomass energy
• Geothermal energy
• Tidal energy

Explanation

the direction of the magnetic field lines gets reversed when the direction of the current flowing through the conductor is reversed.