ETEA RECONDUCTED PAPER 2023

1. A wave is characterized by three physical parameters

 
 
 
 

2. Accelerating electromagnetic charges radiate electromagnetic waves which propagate at the

 
 
 
 

3. K-a rays are generated when transition of an electron occurs from:

 
 
 
 

4. The decay constant of sodium (Na) is 0.000128 /s. the half-life of sodium is

 
 
 
 

5. At the end of 14 min, 1/16 of a sample of radioactive polonium remains. The corresponding half life is

 
 
 
 

6. According to Bohr’s model of the hydrogen atom, electrons move in specific orbit around the nucleus called

 
 
 
 

7. According to first law of thermodynamics. What is the relationship between the change in the internal energy of a closed system ΔU, the heat added to the system (Q) and the work done by the system (W)

 
 
 
 

8. Angular displacement is measured in

 
 
 
 

9. Centrifugal force

 
 
 
 

10. Circular periodic waves can be generated

 
 
 
 

Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Comments 7

Leave a Reply

Your email address will not be published. Required fields are marked *