All correct except Q2 in 6 mins 30 seconds, including 2 mins 20 seconds to read.
Para 1- Quantum mechanics- use(accurately calculating the results of diverse experiments, especially with minute particles) and limitations(give only the probability of an event)
Para 2- Einstein's view on QM- hypothetical "hidden parameters"; experimentation of hidden-parameter quantum theory vs traditional quantum mechanics;
1. The author regards the idea that traditional quantum mechanics is incomplete with
(E) skepticism - Correct
Einstein remained strongly dissatisfied with the theory throughout his life, though he did not maintain that quantum mechanics is wrong. Rather, he held that it is incomplete
Significantly, this hidden-parameter quantum theory leads to experimental predictions different from those of traditional quantum mechanics. Einstein's ideas have been tested by experiments performed since his death, and as most of these experiments support traditional quantum mechanics, Einstein's approach is almost certainly erroneous.
2. It can be inferred from the passage that the author's conclusion that Einstein's approach is "
erroneous" might have to be modified because
(A) it is theoretically possible to generate plausible theories with hidden parameters within them - incorrect, Einstein did generate one and the possibility of generating one was not an issue but rather the results were
(B) some experimental tests of Einstein's theory do not disconfirm the hidden-parameter theory of quantum mechanics
(C) it is possible for a theory to have hidden parameters and yet be probabilistic - incorrect, Einstein added hidden parameters to shift QM from probabilistic to determinsitic
(D) traditional quantum mechanics has not yet been used to analyze all of the phenomena to which it could be applied - irrelevant
(E) there are too many possible hidden parameters to develop meaningful tests of hidden parameter theories
I was down to options B and E and ended up choosing option E. But if option E is true, then it will NEVER be possible to test such theories.
E might have been correct if it said as of now, scientists do not have the ability to develop meaningful tests of hidden parameter theories
Whereas option B, some experimental tests of Einstein's theory do not disconfirm the hidden-parameter theory of quantum mechanics
Passage states-"as most of these experiments support traditional quantum mechanics". Since some experiments do not disconfirm, we cannot conclusively claim that Einstein's approach is almost certainly erroneous.
I thought that since the majority of experiments support traditional quantum mechanics, there is a high probability of it being correct.
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3. According to the passage, Einstein posed objections to the
(B) probabilistic nature of quantum mechanics
Rather, he held that it is incomplete: in quantum mechanics the motion of a particle must be described in terms of probabilities, he argued, only because some parameters that determine the motion have not been specified.
4. The passage suggests that which of the following would have resulted if the experiments mentioned in lines 18-20 had not supported the predictions of traditional quantum mechanics?
(C) A deterministic description of the motion of a particle might still be considered possible. - Correct, we would still be open that Einstein's view is possible
Rather, he held that it is incomplete: in quantum mechanics the motion of a particle must be described in terms of probabilities, he argued, only because some parameters that determine the motion have not been specified. If these hypothetical "hidden parameters" were known, a fully deterministic trajectory could be defined.
carcass wrote:
Quantum mechanics is a highly successful theory: it supplies methods for accurately calculating the results of diverse experiments, especially with minute particles. Line The predictions of quantum mechanics, however, give only the probability of an event, not a deterministic statement of whether or not the event will occur.
Because of this probabilism, Einstein remained strongly dissatisfied with the theory throughout his life, though he did not maintain that quantum mechanics is wrong. Rather, he held that it is incomplete: in quantum mechanics the motion of a particle must be described in terms of probabilities, he argued, only because some parameters that determine the motion have not been specified. If these hypothetical "hidden parameters" were known, a fully deterministic trajectory could be defined. Significantly, this hidden-parameter quantum theory leads to experimental predictions different from those of traditional quantum mechanics. Einstein's ideas have been tested by experiments performed since his death, and as most of these experiments support traditional quantum mechanics, Einstein's approach is almost certainly erroneous.
carcass ,
It seems that the word 'line', which precedes 'The predictions of quantum mechanics' in the second sentence of the first paragraph, isn't correct.
Please check
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28 Oct 2019, 03:15
45%
(medium)
45%
(02:28) wrong 
