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Basic physics revision with short explanatory and numerology questions, Exams of Physics

Good for interviews. Going through this will revise most of your coursework during high school and bachelors

Typology: Exams

2017/2018

Uploaded on 08/23/2018

Aneekdoc108
Aneekdoc108 🇮🇳

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Basic Physics Content with NO Answers
Revised 60 QuestionsBasic Physics
Paul G. Hewitt Challenge:
Here are 60 questions on basic physics that you likely think your students can handle. But if you’re
not focusing on the qualitative question sets in addition to problem sets in your algebra or calculus
based introductory course, be prepared for your students to do poorly with these questions about
basic content we take for granted.
The people working on Physics Education Research, PER, have made great strides in validating the
use of multiple-choice questions to test for conceptual understanding. The questions presented here
have not been through the rigorous validation process of questions on tests like the Force Concept
Inventory, FCI. Rather, they are some of my favorites, honed by use and reuse over my teaching
career at City College of San Francisco. I see the questions as straightforward, without tricks or
subtleties, treating only essential content, which every student should be able to answer after
completing an introductory physics course particularly the course for engineers and scientists.
The questions can also be given to students before the beginning of a course, to let an instructor
know of their students’ initial grasp of the material that lies ahead. If marked improvement is
observed between the beginning and end of a course, or good performance is demonstrated without
the pre-test, then successful teaching efforts can be better seen as verified. If classes do poorly, then
for one thing, perhaps more attention should be paid to the qualitative questions in the end-of-
chapter material of almost every physics textbook.
From the 60 questions in this inventory, choose those that are relevant to your course. Detailed
answers are available.
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Basic Physics Content with NO Answers

Revised 60 Questions—Basic Physics

Paul G. Hewitt Challenge:

Here are 60 questions on basic physics that you likely think your students can handle. But if you’re

not focusing on the qualitative question sets in addition to problem sets in your algebra or calculus

based introductory course, be prepared for your students to do poorly with these questions about

basic content we take for granted.

The people working on Physics Education Research, PER, have made great strides in validating the

use of multiple-choice questions to test for conceptual understanding. The questions presented here

have not been through the rigorous validation process of questions on tests like the Force Concept

Inventory, FCI. Rather, they are some of my favorites, honed by use and reuse over my teaching

career at City College of San Francisco. I see the questions as straightforward, without tricks or

subtleties, treating only essential content, which every student should be able to answer after

completing an introductory physics course— particularly the course for engineers and scientists.

The questions can also be given to students before the beginning of a course, to let an instructor

know of their students’ initial grasp of the material that lies ahead. If marked improvement is

observed between the beginning and end of a course, or good performance is demonstrated without

the pre-test, then successful teaching efforts can be better seen as verified. If classes do poorly, then

for one thing, perhaps more attention should be paid to the qualitative questions in the end-of-

chapter material of almost every physics textbook.

From the 60 questions in this inventory, choose those that are relevant to your course. Detailed

answers are available.

Basic Physics Content

  1. In the absence of air resistance, a ball of mass m is tossed upward to reach a height of 20 m. At the 10-m position, half way up, the net force on the ball is A. 2 mg. B. mg. C. mg /2. D. mg /4.
  2. When you drop a ball from rest it accelerates downward at 9.8 m/s^2. If you instead throw it downward, assuming no air resistance, its acceleration immediately after leaving your hand is A. 9.8 m/s^2. B. more than 9.8 m/s^2. C. less than 9.8 m/s^2. D. Cannot say, unless the speed of throw is given.
  3. A heavy rock and a light rock in free fall (zero air resistance) have the same acceleration. The heavy rock doesn’t have a greater acceleration because the A. force due to gravity is the same on each. B. air resistance is always zero in free fall. C. inertia of both rocks is the same. D. ratio of force to mass is the same. E. None of these.
  4. A cannonball is fired horizontally at 10 m/s from a cliff. Its speed one second after being fired is about A. 10 m/s. B. 14 m/s. C. 16 m/s. D. 20 m/s.
  5. A model airplane flies slower when flying into the wind, and faster with wind at its back. When launched at right angles to the wind, a cross wind, its groundspeed compared with flying in still air is A. the same. B. greater. C. less. D. either greater or less depending on wind speed.
  6. A karate chop delivers a force of 3000 N to a board that breaks. The force that the board exerts on the hand during this event is A. less than 3000 N. C. greater than 3000 N. B. 3000 N. D. Need more information.
  7. A math book and a physics book sitting on a table are tied together with a length of string. With the string taut, one book is pushed off the edge of the table. As it falls, the other book is dragged horizontally across the table surface. With no friction, acceleration of the books is A. zero. B. g /2. C. g. D. a value between zero and g. E. a value that could be greater than g.
  8. When an increase in speed doubles the momentum of a moving body, its kinetic energy A. increases, but less than doubles. C. more than doubles. B. doubles. D. depends on factors not stated.
  9. When an increase in speed doubles the kinetic energy of a moving body, its momentum A. increases, but less than doubles. C. more than doubles. B. doubles. D. depends on factors not stated.
  10. Big brother and little sister can balance on a seesaw because of balanced A. forces. B. torques. C. energies. D. All of these.
  11. When a spinning system contracts in the absence of an external torque, its rotational speed increases and its angular momentum A. decreases. C. remains unchanged. B. increases. D. may increase or decrease.
  1. A principal source of the Earth’s internal energy is A. tidal friction. C. radioactivity. B. gravitational pressure. D. solar radiation.
  2. The surface of Planet Earth loses energy to outer space due mostly to A. conduction. B. convection. C. radiation. D. radioactivity.
  3. The "greenhouse gases" that contribute to global warming absorb A. more visible radiation than infrared. C. visible and infrared about equally. B. more infrared radiation than visible. D. very little radiation of any kind.
  4. In a mixture of hydrogen, oxygen, and nitrogen gases at a given temperature, the molecules having the greatest average speed are those of A. hydrogen. B. oxygen. C. nitrogen. D. But all have the same speed on average.
  5. The electrical force of attraction between an electron and a proton is greater on the A. proton. B. electron. C. Neither; both are the same.
  6. Immediately after two separated charged particles are released from rest, both increase in speed. The particles therefore have A. the same sign of charge. B. opposite signs of charge. C. either the same or opposite signs of charge. D. Need more information.
  7. Compared with the current in an LED lamp, the current in the connecting wire is A. less. C. the same. B. more. D. Need more information.
  8. As more lamps are connected in a series circuit, the current in the power source A. increases. C. remains much the same. B. decreases. D. Need more information.
  9. As more lamps are connected in parallel in a circuit, the current in the power source A. increases. C. remains much the same. B. decreases. D. Need more information.
  10. A capacitor loses half its remaining charge every second. If after five seconds its charge is q , what was its initial charge? A. 4 q. C. 16 q. E. None of these. B. 8 q. D. 32 q.
  11. The magnetic force on a moving charged particle can change the particle’s A. speed. B. direction. C. Both of these. D. Neither of these.
  12. A step-up transformer in an electrical circuit can step up A. voltage. B. energy. C. Both of these. D. Neither of these.
  13. The mutual induction of electric and magnetic fields can produce A. light. B. energy. C. Both of these. D. Neither of these.
  14. All of the following are electromagnetic waves EXCEPT A. radio waves. B. microwaves.

C. light waves. D. X-rays. E. None is outside the family; all are electromagnetic waves.

  1. You swing to and fro on a playground swing. If you stand rather than sit, the time for a to-and-fro swing is A. lengthened. B. shortened. C. unchanged.
  2. Compared with the sound you hear from the siren of a stationary fire engine, the sound you hear when it approaches you has an increased A. speed. B. frequency. C. wavelength. D. All of these.
  3. During the time an aircraft produces a sonic boom, the aircraft is A. breaking the sound barrier. C. flying faster than sound. B. pulling out of a subsonic dive. D. Each of these produces a sonic boom.
  4. The phenomenon of interference occurs for A. sound waves. B. light waves. C. Both of these. D. Neither of these.
  5. The speed of sound in air depends on A. frequency. D. All of these. B. wavelength. E. None of these. C. air temperature.
  6. Your friend states that under all conditions, any radio wave travels faster than any sound wave. You A. agree with your friend. B. disagree with your friend.
  7. The phenomenon of beats results from sound A. reflection. D. All of these. B. refraction. E. None of these. C. interference.
  8. To view your full-face image in a steamy mirror, compared with the height of your face, the minimum height of the patch to wipe away is A. one-quarter. B. one-half. C. the same. D. dependent on your distance from the mirror.
  9. Light reflecting from a smooth surface undergoes a change in A. frequency. D. All of these. B. speed. E. None of these. C. wavelength.
  10. Which of these changes when light refracts in passing from one medium to another? A. Speed only. B. Wavelength only. C. Both speed and wavelength.

D. Neither of these.

  1. When white light enters a prism, green light is bent more than A. blue light. D. Two of these choices are correct. B. violet light. E. None of these choices is correct. C. red light.
  2. When you look at the red petals of a rose, the color light you're seeing is A. red. D. a mixture of green and yellow. B. green. E. cyan. C. white minus red.
  3. When the color yellow is seen on your TV screen, the phosphors being activated on the screen are A. mainly yellow. C. green and yellow. B. blue and red. D. red and green.