Physics Questions Practice Question and Answer
8 Q: Consider an inductor whose linear dimensions are tripled and the total number of turns per unit length is kept constant, what happens to the self-inductance?
1124 063c8df46bdbddb32fda053ad
63c8df46bdbddb32fda053ad- 19 timesfalse
- 23 timestrue
- 327 timesfalse
- 41/3 timesfalse
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Answer : 2. "3 times "
Q: Which of the following is correct about uniform acceleration?
1120 064a2adc98dcbe3218b096682
64a2adc98dcbe3218b096682- 1An object moving on friction-less surface can gain uniform acceleration.false
- 2An object under free fall is an example of uniform acceleration.true
- 3An object moving with constant speed is an example of uniform acceleration.false
- 4Motion of a spring is an example of uniform acceleration.false
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Answer : 2. "An object under free fall is an example of uniform acceleration."
Explanation :
1. The change in velocity of an object at equal time intervals is called uniform acceleration.
2. A freely falling object is an example of uniform acceleration.
Q: We have reason to see the sun a few minutes before the actual sunrise
1117 05f72e901c0afea20a178e18c
5f72e901c0afea20a178e18c- 1Scattering of lightfalse
- 2Diffraction of lightfalse
- 3Total internal reflection of lightfalse
- 4Refraction of lighttrue
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Answer : 4. "Refraction of light"
Q: Who is considered as the ultimate source of all forms of energy?
1112 060b4b23cc6545e407514f717
60b4b23cc6545e407514f717- 1Coalfalse
- 2Atomfalse
- 3Waterfalse
- 4Suntrue
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Answer : 4. "Sun"
Q: The sum of the change in kinetic and potential energy is always-
1106 0608929c2fd171c780883f502
608929c2fd171c780883f502- 1Zerotrue
- 2Positivefalse
- 3Negativefalse
- 4None of the abovefalse
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Answer : 1. "Zero "
Q: What is the nature of real reflection?
1093 05f6da372f9079a64e3c04432
5f6da372f9079a64e3c04432- 1Reversetrue
- 2straightfalse
- 3upright and upside downfalse
- 4None of thesefalse
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Answer : 1. "Reverse"
Q: What does an electric dipole experience when it is kept in the non-uniform electric field?
1084 063c8e9d71c47ef334be0efc0
63c8e9d71c47ef334be0efc0- 1Only a forcefalse
- 2Only torquefalse
- 3Force and torque bothtrue
- 4Neither force nor torquefalse
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Answer : 3. "Force and torque both"
Explanation :
An electric dipole always experiences a torque when placed in uniform as well as non-uniform electric field. But in non-uniform electric field, dipole will also experience net force of attraction. So the electric dipole in non-uniform electric field experiences both torque and force.
Q: What type of energy is used to perform bodily functions?
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60b4b0f6517f2874d53f51b2- 1electric energyfalse
- 2Solar energyfalse
- 3muscle energytrue
- 4Chemical energyfalse
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