Physics Practice Question and Answer
6 Q: How much is polar orbit inclination with the earth's equatorial plane?
770 063c7a5d8bdbddb32fd9cc70c
63c7a5d8bdbddb32fd9cc70c- 10 degreesfalse
- 245 degreesfalse
- 390 degreestrue
- 4180 degreesfalse
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Answer : 3. "90 degrees"
Q: Which among the following instruments is used to measure either direct or alternating electric current?
766 064b17cd02dc867f593e95d61
64b17cd02dc867f593e95d61- 1Wattmeterfalse
- 2Hygrometerfalse
- 3Ammetertrue
- 4Pyrometerfalse
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Answer : 3. "Ammeter"
Explanation :
1. The device which is used to measure electric current in an electric circuit is called ammeter.
2. The resistance of an ideal ammeter is always zero and the electric circuit is always connected in series.
Q: What happens to the force acting between the charged particles, if the distance between these charged particles is halved?
742 063c8e92bbdbddb32fda08d59
63c8e92bbdbddb32fda08d59- 1It increases by four timestrue
- 2It gets doubledfalse
- 3It becomes halffalse
- 4It reduces by one-fourthfalse
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Answer : 1. "It increases by four times "
Explanation :
So, when the distance between the two charges is halved, the force is increased four times.
Q: According to Dalton’s atomic theory, atoms combine in the ratio of small whole numbers to form ______.
740 064919f9ec7d7c7e0670d10b8
64919f9ec7d7c7e0670d10b8- 1Neutronsfalse
- 2Moleculesfalse
- 3Protonsfalse
- 4Compoundstrue
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Answer : 4. "Compounds"
Explanation :
1. According to Dalton's atomic theory, atoms combine in small whole-number proportions to form compounds.
Q: Identify the correct statement.
658 0649aa3043662c8741dfd960b
649aa3043662c8741dfd960b- 1Newton is a unit of force.true
- 2Newton is a unit of power.false
- 3Joule is a unit of force.false
- 4Joule is a unit of power.false
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Answer : 1. "Newton is a unit of force."
Explanation :
1. Newton is the SI unit of force. It is a unit force that causes an acceleration of one meter per second on one kilogram of mass.
- Force can be defined as:
Force =Mass x Acceleration
2. Joule is the SI unit of energy and work. It is the unit work done by one Newton force over a distance of one meter.
- Energy can be defined as:
Energy = Work x Time
Q: What makes a virtual image of a real object?
1 05f6da2bdec13dd748004c084
5f6da2bdec13dd748004c084- 1convex mirrorfalse
- 2plane mirrortrue
- 3concave mirrorfalse
- 4All of thesefalse
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