what is photon ?

-
Radiation consists of quantum of energy. Quantum of energy (packet of energy or quanta) is known as photon. photon is a particle. It possesses wave nature also. Rest mass of a Photon is zero.

Comments

Post a Comment

Popular posts from this blog

angle of contact.

-
It is defined as the angle between the tangent to the liquid surface at the point of contact and solid surface inside the liquid is called as angle of contact  The value of angle of contact depends upon  (i) Nature of solid and liquid in contact  (ii) Cleanliness of the surface in contact  (iii) Medium above the free surface of liquid 
Read more

Difference between molecularity & order of reaction

-
Answer:-                                      order of Molecularity                                reaction       Common points:- • It's value does not         •Its value also  exceed three.                      does not exceed                                              three. • Depends upon the          •It also depends  Condition of a react           upon the conidti ion.                                       on of a reaction.  Dif...
Read more

Difference between electrochemical & electrolytic cell

-
Answer:- ELECTROCHEMICAL            ELECTROLYTIC           CELL                                       CELL • Chemical energy          • Electrical energy converted into elec-       converted into c- -trical energy.                   -hemical energy. • Chemical reaction      • Chemical reactio is spontaneous.              -n is non-spontan-                                           eous. • Anode is negative.      • Anode is positive and cathode is               and cathode is positive.                ...
Read more