TRB MODEL QUESTIONS FOR PHYSICS
| 71. |
Split ring commutators are used in which of the following |
| |
- A. AC motor
- B. DC dynamo
- C. AC dynamo
- D. All of the above
|
| 72. |
In a reactor, Cadmium rods are used for |
| |
- A. Speeding of neutrons
- B. Slowing neutrons
- C. Absorbing neutrons
- D. dispersing neutrons
|
| 73. |
The science of Cryogenics deals with |
| |
- A. high temperature
- B. low temperatures
- C. molecular biology
- D. biotechnology
|
| 74. |
Rain drops assume spherical shape due to |
| |
- A. surface tension
- B. centrifugal force
- C. centripetal force
- D. gravitational force
|
| 75. |
In the human being, the part which is sensitive to light is |
| |
- A. retina
- B. sclera/b>
- C. the eye balls
- D. ciliary muscles
|
