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