An ideal blackbody is an object that

1- absorbs all the energy that strikes it.

2- absorbs most of the energy that strikes it.

3- only absorbs energy at ultraviolet (black light) wavelengths.

4- absorbs a little of the energy that strikes it.

5- absorbs exactly half of the energy that strikes it.

The correct answer is option 1.

Explanation:

An ideal black body is defined as a physical body that absorbs all the radiant energies of falling on it and no energy is reflected back.

All the radiations coming in electromagnetic waves series are absorbed by the ideal black body due to which its surface appears black.

This concept of absorbing of energy is used to study radiation phenomena.

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i