Physics Practice Question and Answer
8 Q: An object starts moving in its steady state. It attains a speed of 5 m / s in 2 seconds. What will be its acceleration?
1414 05f869de3e5230d620733716e
5f869de3e5230d620733716e- 12.5 m/sec2true
- 22 m/sec2false
- 31 m/sec2false
- 40.4 m/sec2false
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Answer : 1. "2.5 m/sec2"
Q: What is the degree of dissociation for strong electrolytes?
1407 063c7ccbc8731ac33279b21f7
63c7ccbc8731ac33279b21f7- 11true
- 20false
- 3Less than 1false
- 4Greater than 1false
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Answer : 1. "1"
Explanation :
Strong electrolytes have a degree of dissociation close to one, while weak electrolytes have a degree of dissociation less than one. Solvent nature: Solvents with a high dielectric constant show more dissociation. Dilution: As the solution is diluted, the degree of dissociation increases.
Q: What is the unit of magnetic field?
1407 05fe45b5600c5087b4d132a05
5fe45b5600c5087b4d132a05- 1Newtonfalse
- 2Teslatrue
- 3Amperefalse
- 4meterfalse
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Answer : 2. "Tesla"
Q: On which part of the eye does the reflection of an object lie?
1404 05fe45b109002d17b1c42e984
5fe45b109002d17b1c42e984- 1corneafalse
- 2Retinatrue
- 3Irisfalse
- 4pupilfalse
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Answer : 2. "Retina"
Q: What are the conditions for gas like Carbon monoxide to obey the ideal gas laws?
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63c8f745bdbddb32fda0e8d0- 1Low temperature and low pressurefalse
- 2Low temperature and high pressurefalse
- 3High temperature and low pressuretrue
- 4High temperature and high pressurefalse
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Answer : 3. "High temperature and low pressure "
Explanation :
A real gas can behave as an ideal gas if volume of molecule is negligible and interaction between molecule is negligible. This will happen if number of molecule per unit volume is very small. This is only possible at high temperature and low pressure.
Q: Solar cells convert solar energy into what energy?
1395 160b4b725517f2874d53f5d0d
60b4b725517f2874d53f5d0d- 1Electrical energytrue
- 2kinetic energyfalse
- 3mechanical energyfalse
- 4Thermal energyfalse
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Answer : 1. "Electrical energy"
Q: In case of negative work the angle between the force and displacement is-
1394 060892b3c0ac1df7d9f80ef4b
60892b3c0ac1df7d9f80ef4b- 10°false
- 245°false
- 390°false
- 4180°true
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Answer : 4. "180°"
Q: Degree of dissociation does not depend on which of the following factors?
1392 063c7cd09b338bc336f093b86
63c7cd09b338bc336f093b86- 1Nature of the solutefalse
- 2Nature of the solventfalse
- 3Soundtrue
- 4Concentrationfalse
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Answer : 3. "Sound "
Explanation :
The Degree of dissociation does not depend on catalyst.The equivalent conductivity of 0.1M weak acid is 100 times less than that at infinite dilution.