601PhysicsMedium
Instantaneous and average velocities become equal when body___________________?
Ahas uniform acceleration
MCQs
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Correct answer
B. has zero acceleration
Explanation
has zero acceleration is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Stephens law
Explanation
Stephens law is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. holes in n-type and free electrons in p-type
Explanation
holes in n-type and free electrons in p-type is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. π
Explanation
π is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Increases
Explanation
Increases is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Acceleration
Explanation
Acceleration is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. The Sun remains behind us and we face raindrops
Explanation
We see rainbows because of the geometry of raindrops. When the sun shines from behind us into the rain, incident rays of light enter the drop and are refracted inwards. They are reflected from the back surface of the raindrop, and refracted again as they exit the raindrop and return to our eyes. A rainbow is an optical and meteorological phenomenon that is caused by reflection of light in water droplets in the Earth’s atmosphere, resulting in a spectrum of light appearing in the sky.
Correct answer
D. Equal to the weight of the stone
Explanation
Equal to the weight of the stone is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. 32 feet
Explanation
32 feet is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. 1
Explanation
1 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.