In this section you will find after each of the passages a number of questions or unfinishedstatements about the passage, each with 4 (A, B, C and D) choices to complete the statement.You must choose the one which you think fits best. Then blacken the corresponding letter asrequired on your Machine-scoring ANSWER SHEET. The time for this section is 75 minute.Questions 51-56 are based on the following passage.
Awarded the Nobel Prize for physics in 1918, German physicist Max Planck is best rememberedas the originator of the quantum theory. His work helped usher in a new era in theoretical physicsand revolutionized the scientific community’s understanding of atomic and subatomic processes.Planck introduced an idea that led to the quantum theory, which became the foundation oftwentieth century physics. In December 1900, Planck worked out an equation that described thedistribution of radiation accurately over the range of low to high frequencies. He had developed atheory which depended on a model of matter that seemed very strange at the time. The modelrequired the emission of electromagnetic radiation in small chunks or particles. These particleswere later called quantums. The energy associated with each quantum is measured by multiplyingthe frequency of the radiation, v, by a universal constant, h. Thus, energy, or E, equals hv. Theconstant, h, is known as Planck’s constant. It is now recognized as one of the fundamentalconstants of the world.
Planck announced his findings in 1900, but it was years before the full consequences of hisrevolutionary quantum theory were recognized. Throughout his life, Planck made significantcontributions to optics, thermodynamics and statistical mechanics, physical chemistry, amongother fields.
51. In which of the following fields did Max Planck not make a significant contribution?A. Optics.
B. Thermodynamics.
C. Statistical mechanics.
D. Biology.
52. The word “revolutionary” as used in line 16 means .
A. radical
B. extremist
C. momentous
D. militaristic
53. It can be inferred from the passage that Planck’s work led to the development of which of thefollowing?
A. The rocket.
B. The atomic bomb.
C. The internal combustion engine.
D. The computer.
54. The particles of electromagnetic radiation given off by matter are known as .
B. atoms
C. electrons
D. valences
55. The implication in this passage is that .
A. only a German physicist could discover such a theory
B. quantum theory, which led to the development of twentieth century physics, is basically a mathematical formula
C. Planck’s constant was not discernible before 1900
D. radiation was hard to study
56. “An idea” as used in line 5, refers to .
A. a model of matter
B. emission of electromagnetic radiation
C. quantums
D. the equation that described the distribution of radiation accurately over the range of low to high frequencies
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