TRB MODEL QUESTIONS FOR PHYSICS
| 46. |
Atom is |
| |
- A. negatively charged
- B. positively charged
- C. neutral
- D. none of the above
|
| 47. |
Fortin’s barometer is used to measure the atmospheric |
| |
- A. density
- B. pressure
- C. temperature
- D. relatively density
|
| 48. |
Transfer of heat by molecular collision is |
| |
- A. conduction
- B. convection
- C. radiation
- D. collimation
|
| 49. |
The instrument used to test the purify of milk is |
| |
- A. polarimeter
- B. galvanometer
- C. calorimeter
- D. lactometer
|
| 50. |
Which metal is commonly used for making an electromagnet? |
| |
- A. copper
- B. cobalt
- C. iron
- D. nickel
|
