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Practice MCQ Questions and answers on Physics-GK

Learn and practice General Knowledge questions and answers on Physics with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-6 section-10

Each section contains 100 MCQs on Physics .
51
The Law of Kepler is related with which among the following ?
Discuss
Answer & Solution
Answer: Option A
Solution:
The Law of Kepler is related with planetary motion.
52
The term ''equinox' means
Discuss
Answer & Solution
Answer: Option C
Solution:
The time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21 (vernal equinox, or spring equinox ) and September 22 (autumnal equinox).
53
If the earth suddenly stop rotating, the value of "g" will be
Discuss
Answer & Solution
Answer: Option B
Solution:
If the earth stops rotating then the value of 'g' at equator will increase because when the earth rotates the gravity at every point remains uniform and when it stops rotating, the gravity increases as pressure is exerted on only one point at the equator.
54
If an empty cylinder is half filled with a liquid, its center of gravity is
Discuss
Answer & Solution
Answer: Option B
Solution:
If an empty cylinder is half filled with a liquid, its center of gravity is shifted downwards.
55
Temperature of distant luminous bodies can be determined by
Discuss
Answer & Solution
Answer: Option C
Solution:
A pyrometer is a type of remote-sensing thermometer used to measure the temperature of a surface. It is a device that from a distance determines the temperature of a luminous surface from the spectrum of the thermal radiation it emits, a process known as pyrometry.
56
The three famous law of Kepler is related to
Discuss
Answer & Solution
Answer: Option D
Solution:
The three famous law of Kepler is related to planetary motion.
57
In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge?
Discuss
Answer & Solution
Answer: Option D
Solution:
A White Hole is a hypothetical hole in outer space from which energy, stars, and other celestial matter emerge or explode. It is a theoretical celestial object into which matter is funneled from a black hole.
58
If there were no gravity, which of the following will not be there for a fluid?
Discuss
Answer & Solution
Answer: Option D
Solution:
Archimedes' upward thrust will be absent for a fluid, if there were no gravity.
59
Number of lattices in the orthorhombic system is
Discuss
Answer & Solution
Answer: Option C
Solution:
Number of lattices in the orthorhombic system is 7.
60
The term ''Isoneph' indicates the lines of equal
Discuss
Answer & Solution
Answer: Option A
Solution:
An isoneph is a line indicating equal cloud cover or equal cloudiness. Variations in the degrees of slope, temperature, occurrence of rainfall, may be represented by drawing the lines of equal values on a map. All such maps are termed as Isopleth Map. The word Isopleth is derived from ‘Iso’ meaning equal and ‘pleth’ means lines. Thus, an imaginary line, which joins the places of equal values, is referred as Isopleth. The more frequently drawn isopleths include Isotherm (equal temperature), Isobar (equal pressure), Isohyets (equal rainfall), Isonephs (equal cloudiness), Isohels (equal sunshine), contours (equal heights), Isobaths (equal depths), Isohaline (equal salinity), etc.