What are considered the building blocks of matter?
Correct answer D. Atoms
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Physics MCQs
Page 43 of Physics multiple-choice questions with answers. Tap an option to check yourself.
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What are the three subatomic particles of an atom?
Correct answer A. Protons,Neutrons & Electrons
The protons and neutrons are found in the center of the atom, which is called the ____of the atom?
Correct answer A. Nucleus
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A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect?
Correct answer C. Nuclear Radiation
Magnifying power of a simple microscope can be increased by?
Correct answer B. Decreasing focal length of the lens
Twinkling of stars is caused by?
Correct answer C. refraction of light
In a fission nuclear reaction, a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called?
Correct answer D. Fusion nuclear reaction
The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use?
Correct answer C. Ultrasonic
A six feet tall lady wants to see her full image in a plane mirror . The minimum length of the mirror will be?
Correct answer D. 3 feet
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When a ray of sunlight enters a dark room, its straight path become visible because of dust particles hanging in the air. It is because light is?
Correct answer A. Visible
It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the?
Correct answer A. pitch
The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least?
Correct answer C. 56 ft
Which of the following explains the reason why there is no total eclipse of the sun?
Correct answer D. Area of the sun covered by the moon
Which of the following layers make radio transmission possible?
Correct answer B. Ionosphere
The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called?
Correct answer A. Aphelion
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Which of the following is most elastic?
Correct answer A. Steel
The science which deals with study of manners and customs of people is?
Correct answer A. Ethnology
Clocks moving with velocities comparable to the speed of light run?
Correct answer B. Slow
A light year is a unit of?
Correct answer C. Length
The device used to convert Alternate Current into Direct Current is called?
Correct answer D. Rectifier