1. Which relation is wrong

a) 1 Calorie = 4.18 Joules

b) \[1\dot{A}=10^{-10}m\]

c) \[1MeV=1.6\times 10^{-13}Joules\]

d) \[1Newton=10^{-5}Dynes\]

Explanation: 1 Newton = 10

^{5}Dyne

2. If \[x=at+bt^{2}\] , where x is the distance travelled by the body in kilometres while t is the time in seconds, then the units of b are

a) \[Km\diagup s\]

b) \[Km- s\]

c) \[Km\diagup s^{2}\]

d) \[Km- s^{2}\]

Explanation:

3. Which of the following quantity is expressed as force per unit area

a) Work

b) Pressure

c) Volume

d) Area

Explanation: Pressure

4. Unit of impulse is

a) Newton

b) \[kg-m\]

c) \[kg-m\diagup s\]

d) Joule

Explanation: Impulse = Force * time = (kg-m/s

^{2}) *s = kg-m/s

5. Which is not a unit of electric field

a) \[NC^{-1}\]

b) \[Vm^{-1}\]

c) \[JC^{-1}\]

d) \[JC^{-1}m^{-1}\]

Explanation: \[JC^{-1}\]

6. The correct value of \[0^{\circ}C\] on the Kelvin scale is

a) 273.15 K

b) 272.85 K

c) 273 K

d) 273.2 K

Explanation: K = C + 273.15

7. 'Torr' is the unit of

a) Pressure

b) Volume

c) Density

d) Flux

Explanation: 'Torr' is the unit of Pressure

8. Which of the following is a derived unit

a) Unit of mass

b) Unit of length

c) Unit of time

d) Unit of volume

Explanation: Unit of volume

9. \[Dyne\diagup cm^{2}\] is not a unit of

a) Pressure

b) Stress

c) Strain

d) Young's modulus

Explanation: Strain

10. The units of angular momentum are

a) \[kg-m^{2}\diagup s^{2}\]

b) \[Joule-s\]

c) \[Joule\diagup s\]

d) \[kg-m- s^{2}\]

Explanation: \[Joule-s\]