6.1 special relativity 1 - 题库网 (tiku.one)

1#

A. B. C. D.

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Two cyclists, A and B, start riding their bicycles from the same point. Cyclist A moves northwards with a speed of $4V$ relative to the ground, and cyclist B moves westwards with a speed of $3V$ relative to the ground.

The magnitude of the velocity of the Cyclist A relative to the Cyclist B is

A. $v$

B. $4v$

C. $5v$

D. $7v$

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Observations of muon decay can be used as evidence of

I. Time Dilation
II. Length Contraction
III. Absolute Simultaneity

A. statement I only

B. statement II only

C. statements I and II only

D. statements II and III only

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

At a relativistic speed, a rocket journeyed from Earth to Saturn. The+ce h9x scdzg0o8h87 r duration of the travel is meaze8 xcsg89d0co + hr7hsured according to the stationary observer on earth as $t$. The length of the rocket is measured according to the observer in the rocket as $L$. Which of the following is correct for the time of travel according to the observer in the rocket and the length of the rocket according to the observer on the Earth?

A. Time of travel (rocket observer) is less than t; Length of the rocket (Earth observer) is shorter than L

B. Time of travel (rocket observer) is less than t; Length of the rocket (Earth observer) is longer than L

C. Time of travel (rocket observer) is greater than t; Length of the rocket (Earth observer) is shorter than L

D. Time of travel (rocket observer) is greater than t; Length of the rocket (Earth observer) is longer than L

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

You are riding in a spaceship that has no windows, radiosbr/4hl) tc/ cs, or other means for you to observe or measure what is outside. You wish to detebt4r/ shc)c/ lrmine if the ship is stopped or moving at constant velocity. What should you do?

A. You can determine if the ship is moving by determining the apparent velocity of light.

B. You can determine if the ship is moving by checking your precision time piece. If it's running slow, the ship is moving.

C. You can determine if the ship is moving either by determining the apparent velocity of light or by checking your precision time piece. If it's running slow, the ship is moving.

D. You should give up because you have taken on an impossible task.

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The Michelson-Morley experiment was deuhwm ky94-lm.er1 8zv signed to measure

A. the relativistic mass of the electron.

B. the relativistic energy of the electron.

C. the velocity of the Earth relative to the ether.

D. the acceleration of gravity on the Earth's surface.

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Michelson and Morley concluded from the re d+k vykc4sgz frox/(nnoa+*3 ),8slqsults of their experiment that

A. the experiment was a failure since there was no detectable shift in the interference pattern.

B. the experiment was successful in not detecting a shift in the interference pattern.

C. the experiment was a failure since they detected a shift in the interference pattern.

D. the experiment was successful in detecting a shift in the interference pattern.

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

You can build an intetf; :h,i09 -e7vkoznw-ad( uud cx1wsrferometer yourself if you use the following components:

A. a light source, a detector screen, a partially silvered mirror, a flat mirror, and a glass plate.

B. a light source, a detector screen, two partially silvered mirrors, and a glass plate.

C. a light source, a detector screen, two partially silvered mirrors, a flat mirror, and a glass plate.

D. a light source, a detector screen, a partially silvered mirror, two flat mirrors, and a glass plate.

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The theory of special relativit2ka iy0mc70nn y

A. is based on a complex mathematical analysis.

B. has not been verified by experiment.

C. does not agree with Newtonian mechanics.

D. does not agree with electromagnetic theory.

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

One of Einstein's postulates in formulating the specialm4i21,me t tjvz+4qsh theory of relativity was that the laws of physics are the same in visz em1jtt,24 hq +4mreference frames that

A. accelerate.

B. move at constant velocity with respect to an inertial frame.

C. oscillate.

D. are stationary, but not in moving frames.

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

If you were to measure your pulse rate while in :schx9ta6pbh.8evbpr :h5k( a spaceship moving away from the Sun at a speed close to the speed of light, you would find that it :ab p.p9bv 8kt6c (s5 :hrhxhewas

A. much faster than normal.

B. much slower than normal.

C. the same as it was here on Earth.

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Relative to a stationary observer, a movingzrq+esg)ipyz .l j, 8; clock

A. always runs slower than normal.

B. always runs faster than normal.

C. keeps its normal time.

D. can do any of the above. It depends on the relative velocity between the observer and the clock.

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

The gamma factor is defined as :4b )onr)znzi ,18 k.7ijae1txhjybr $\gamma = 1 / \sqrt{1- (v/c)^2}$, therefore gamma ($\gamma$)

A. can be zero.

B. can be any number less than or equal to one.

C. can be any number greater than or equal to one.

D. cannot equal one.

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Suppose one twin takes a ridcb d0h1c; e1lggk5l gmh l)w8 5y5,snde in a space ship traveling at a very high speed to a distant star and back again, while the other twin remains on Earth. The twin that remained on Earth predicts that thedgc0l5n cdh)yhs155 m gle18 w,l; bgk astronaut twin is

A. younger.

B. the same age.

C. older.

D. cannot be determined from the given information

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15#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Relative to a stationary observer, a moving objmgy)hp:k/z2 e- ass2 kect

A. appears shorter than normal.

B. appears longer than normal.

C. keeps its same length time.

D. can do any of the above. It depends on the relative velocity between the observer and the object.

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16#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object moves in a direction parallel to its lencf4ippc b,) *o;.cvjggth with a velocity that approacg ;.fbo j,)ivc*c4 pcphes the velocity of light. The width of this object, as measured by a stationary observer,

A. approaches infinity.

B. approaches zero.

C. increases slightly.

D. does not change.

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17#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

An object moves in a direction parallsy 7i4knm gc ,::zb)rtel to its length with a velocity that approaches the velocity of light. The :tsk)7 n :zy,mbgic4r length of this object, as measured by a stationary observer,

A. approaches infinity.

B. approaches zero.

C. increases slightly.

D. does not change.

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18#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

As the speed of a particle approacheeu i4vqw,k 4k4s the speed of light, the mass of the particl4 iv4,4weukk qe

A. increases.

B. decreases.

C. remains the same.

D. approaches zero.

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