DUHS MDCAT PAPER

(PART 17)

1. The rate of change of linear momentum of a body is equal to:

 
 
 
 
 

2. The most appropriate mathematical expression representing simple harmonic motion is:

 
 
 
 
 

3. A body is moving in a circle with constant speed, with radius of circle is ‘r’ and time period ‘T’ the centripetal acceleration is given by

 
 
 
 
 

4. The kinetic energy of an electron in first Bohr radius of H – atom is:

 
 
 
 
 

5. Lenz’ law is a form of the:

 
 
 
 
 

6. The rate of doing work is zero, when the angle 0 between force and velocity is:

 
 
 
 
 

7. Half-life of a radioactive sample is given by:

 
 
 
 
 

8. Two similar point charges, each of 1 coulomb, placed in free space 1m apart, repel each other with a force of:

 
 
 
 
 

9. In nuclear reaction 7N^14+ 2He^14→8(0)^17 +_______, the missing particle is:

 
 
 
 
 

10. The potential difference applied across a diode to reduce depletion layer is:

 
 
 
 
 

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