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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.
Answer : D
Explanation
N/A
Q 2 - If a person stands in front of two plane mirrors, which are inclined at an angle of 600, then how many images he will see?
Answer : C
Explanation
N/A
Q 3 - The upper layer of the Earth, ionosphere is largely composed of
A - Electrons and electrically charged atoms
B - Protons and electrically charged atoms
Answer : A
Explanation
The ionosphere is the upper layer of the atmosphere that starts from about 60 km (up from the earth surface) and goes up to 1000 km.
Q 4 - Why is clear sky night cooler than the cloudy sky night?
Answer : A
Explanation
In a clear sky, heat radiated from the earth's surface, easily gets escaped into space, and resultantly, the temperature goes down; on the other hand, in cloudy night, heat remained trapped in the earths atmosphere.
Answer : A
Explanation
N/A
Q 6 - In desert regions, night is much cooler than the night of other plain region of the earth because
C - Sand particles radiate back the incoming solar radiation swiftly
D - Sand particles absorb all the incoming solar radiation swiftly
Answer : C
Explanation
N/A
Q 7 - When we put a coin in a pot and fill it with water, the coin appears to rise because of
Answer : B
Explanation
Refraction is a phenomenon under which direction of the propagation of any wave or light changes or refracted as a result of its travelling at different speeds through different mediums.
Q 8 - When a cricket player catches a fasting coming ball, he pulls his hands back with the fast coming ball to reduce the velocity to zero. The act best defines
Answer : C
Explanation
N/A
Q 9 - Which among the following surface reflects maximum light?
Answer : B
Explanation
White surface reflects maximum amount of light (falling on it).
Q 10 - The cooling system of a motor car works on the principle of
Answer : A
Explanation
N/A
Q 11 - Consider the following statements:
1. Distance is the length of the actual path covered by a moving body in a given time interval.
2. Shortest distance covered by a body in a definite direction is called as displacement.
Choose the correct answer from the codes given below:
Answer : C
Explanation
Distance is scalar quantity whereas displacement is a vector quantity.
Q 12 - Consider the following statements:
1. The escape velocity is about 33 times of the speed of the sound.
2. Above the altitude of 9,000 km (in space), the escape velocity is lesser.
Choose the correct answer from the codes given below:
Answer : C
Explanation
Above the altitude of 9,000 km, the escape velocity is about 7.1 km/s.
Q 13 - Who among the following has discovered Ultra-Violet Rays?
Answer : C
Explanation
Johann Ritter had discovered ultra-violet rays in 1801.
Q 14 - What is the escape velocity for the earth?
Answer : A
Explanation
N/A
Answer : B
Explanation
The measuring unit of energy is Pascal.
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.
Answer : A
Explanation
Seymour Cray was the first who acted to materialize the idea of supercomputer in 1960s.
Q 18 - Consider the following statements:
1. According to quantum theory, light is considered as a bundle of energy called as photon.
2. Speed of light is first measured by Roemer.
Choose the correct answer from the codes given below:
Answer : C
Explanation
Roemer first measured the speed of light in 1678.
Q 19 - Consider the following statements:
1. When a body moves with supersonic speed in the air, it leaves a conical region of disturbance behind it, which keeps spreading continuously and known as shock wave.
2. Shock waves carry huge energy that can break window panes easily.
Choose the correct answer from the codes given below:
Answer : C
Explanation
N/A
Q 20 - Consider the following statements:
1. The process of conversion of a solid directly into vapor is known as sublimation.
2. When the boiling point is less than the melting point, sublimation takes place.
Choose the correct answer from the codes given below:
Answer : C
Explanation
Sublimation can be seen by camphor or ice in vacuum.