Physics Practice Question and Answer
8 4 Q:
63c8d7f2bdbddb32fda0219d Answer : 4. "As there is no flow of current through the galvanometer"
4 Q:
61655ebe3d260361529b137f 4 Q:
6099137c1c52c418ae4c60eb 4 Q:
5f6da4b2ff25c92a085bb8f2 4 Q:
61655b5c3d260361529b0876 4 Q:
5f869be0b7ad805e26c0af01 4 Q:
6089295dfd171c780883f3f9 4 Q:
63a2c8e521b1fe5f1a352faa Answer : 2. "Phon"
Q: A potentiometer is considered a versatile and accurate device to make an electrical measurement of EMF. Why?
1302 063c8d7f2bdbddb32fda0219d
63c8d7f2bdbddb32fda0219d- 1Because the method involves a combinationfalse
- 2There are cells involvedfalse
- 3Because of potential gradientsfalse
- 4As there is no flow of current through the galvanometertrue
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Answer : 4. "As there is no flow of current through the galvanometer"
Explanation :
A potentiometer is an accurate and versatile device to make electrical measurements of emf because the method involves a condition of no current flow through the galvanometer, the device can be used to measure potential difference, internal resistance of a cell and compare emf's of two sources. Q.
Q: The measure of inductance is
1302 161655ebe3d260361529b137f
61655ebe3d260361529b137f- 1Henrytrue
- 2Ohmfalse
- 3Amperefalse
- 4Coulombfalse
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Answer : 1. "Henry "
Q: When resistors are connected in series, then net resistance____.
1301 26099137c1c52c418ae4c60eb
6099137c1c52c418ae4c60eb- 1Increasestrue
- 2Decreasesfalse
- 3Remains samefalse
- 4None of thesefalse
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Answer : 1. "Increases "
Q: Controls the amount of light entering the eye?
1290 05f6da4b2ff25c92a085bb8f2
5f6da4b2ff25c92a085bb8f2- 1Iristrue
- 2pupilfalse
- 3lensfalse
- 4side musclesfalse
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Answer : 1. "Iris"
Q: Who gave the theory of gravity?
1284 061655b5c3d260361529b0876
61655b5c3d260361529b0876- 1Isaac Newtontrue
- 2John Adamsfalse
- 3Charles Newtonfalse
- 4Charles Babbagefalse
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Answer : 1. "Isaac Newton "
Q: How is 'Power’ interpreted?
1283 05f869be0b7ad805e26c0af01
5f869be0b7ad805e26c0af01- 1Work done in energy transferfalse
- 2Working rate or energy transfer ratetrue
- 3Work done in a minutefalse
- 4Force applied to increase the loadfalse
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Answer : 2. "Working rate or energy transfer rate "
Q: When a heated electric bulb glows -
1275 06089295dfd171c780883f3f9
6089295dfd171c780883f3f9- 1Electrical energy is completely converted into light.false
- 2Electrical energy is partly converted into light energy and partly into heat energytrue
- 3Light energy is converted into electrical energy.false
- 4Electric energy is converted into magnetic energy .false
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Answer : 2. "Electrical energy is partly converted into light energy and partly into heat energy "
Q: Which of the following is not a unit of heat?
1268 063a2c8e521b1fe5f1a352faa
63a2c8e521b1fe5f1a352faa- 1Caloriefalse
- 2Phontrue
- 3Joulefalse
- 4Kcalfalse
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Answer : 2. "Phon"
Explanation :
The correct answer is Phon. Phon is not a unit of Heat.
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