Physics Part 2 Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Physics. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - A diode is used as a rectifier that converts …
A - Direct current to Alternating current
B - Alternating current to Direct current
C - High voltage Alternating current to low voltage Alternating current
D - High voltage Direct current to low voltage Direct current
Answer : B
Explanation
A diode bridge is basically a device that converts Alternating Current (AC) to Direct Current (DC).
Q 2 - In which of the following type of eye problems, the cylindrical lens is used?
Answer : A
Explanation
Normally caused by an irregular cornea.
Q 3 - Which among the following waves is used in radar?
Answer : B
Explanation
Radar is used to detect aircraft, spacecraft, guided missiles, ships, motor vehicles, weather formations, submarines, and terrain.
Q 4 - If the temperature of air increases then the speed of sound will …
Answer : A
Explanation
N/A
Q 5 - Consider the following statements:
1. Thermodynamic temperature is the absolute measure of temperature.
2. Thermodynamic temperature uses the Kelvin scale for its measurement.
Choose the correct answer from the codes given below:
Answer : C
Explanation
Thermodynamic temperature is one of the principal parameters of thermodynamics.
Q 6 - Why does a liquid drop always try to maintain its spherical shape?
Answer : B
Explanation
Because of surface tension property, the particles of liquid tends to minimize the surface area.
Q 7 - Which among the following type of pens uses capillary action in addition to gravity for flow of ink?
Answer : A
Explanation
N/A
Q 8 - Breathing at the higher altitude is always difficult because …
A - The temperature is too cold
B - The air pressure is very high
Answer : C
Explanation
The amount of oxygen gradually decreases with increasing altitude and air pressure also decreases therefore, it is difficult to breath.
Q 9 - The small particles of Kapoor spin on water surface because of …
Answer : A
Explanation
N/A
Q 10 - Atomic watches work on the principle of …
Answer : B
Explanation
Atomic watches give the most accurate time.
Q 11 - Transformer is used in electricity to …
Answer : D
Explanation
There are two types of transformer namely step up (to increase voltage) and step down (to decrease voltage).
Q 12 - What is the frequency range of VHF?
Answer : D
Explanation
VHF stands for Very High Frequency.
Q 13 - Electric current is scalar because …
C - It has sometimes magnitude and sometimes direction
D - It has both magnitude and direction, but does not follow triangle rule
Answer : D
Explanation
N/A
Q 14 - Who among the following first predicted that a communication satellite should be stationary in the geosynchronous orbit?
Answer : A
Explanation
It was Arthur C Clarck who first observed this fact.
Q 15 - Consider the following statements:
1. The radioactivity element ‘radium’ was discovered by Robert Pierre and his wife Madam Curie.
2. Rutherford first discovered the rays emitted by radioactivity.
Choose the correct answer from the codes given below:
Answer : C
Explanation
N/A
Q 16 - Which among the following is used by navigators to find the latitude of a place?
Answer : A
Explanation
Sextant is also used to measure the height of very distant objects.
Q 17 - Consider the following statements:
1. With the emission of Alfa particle, mass number is decreased by 4 and atomic number is decreased by 2.
2. With the emission of Beta particle, mass number does not change, but atomic number is increased by 1.
Choose the correct answer from the codes given below:
Answer : C
Explanation
The change in atomic number and mass number in the radioactivity is explained by Group-displacement law or Soddy-Fajan law.
Q 18 - Consider the following statements:
1. If a lift is going up with acceleration, the apparent weight of a body is more than the true weight.
2. If a lift is going down with acceleration, the apparent weight of a body is less than the true weight.
Choose the correct answer from the codes given below:
Answer : C
Explanation
N/A
Answer : B
Explanation
N/A
Q 20 - Plants absorb …………………… colors (the most).
Answer : A
Explanation
The chlorophyll plays major role in absorbing the light.
