A ball is thrown towards the earth and bounce back. During this process:
ADirection of velocity and acceleration changes
BDirection of Displacement and Velocity changes
CDirection of Displacement, Velocity and acceleration changes
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Correct answer
B. Direction of Displacement and Velocity changes
Explanation
Direction of Displacement and Velocity changes is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Eddy currents
Explanation
Eddy currents is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Chadwick
Explanation
Chadwick is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Electrons
Explanation
Electric current in a solid metal conductor is caused by the movement of electric charge. An electric current is the flow of electric charge. An electron current, the flow of electrons, contributes to an electric current since the electron ‘carries’ negative electric charge.
Correct answer
C. Dynamo
Explanation
Dynamo is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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D. Rectilinear path
Explanation
Rectilinear path is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. γ-rays
Explanation
γ-rays is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. radio waves on it
Explanation
Radar, which stands for radio detection and ranging, is a system that uses reflected radio waves to detect objects and measure their distance and speed. For example, police use radar to calculate the speed of cars.
Correct answer
B. A.B/A
Explanation
A.B/A is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. no interference fringes are observed
Explanation
no interference fringes are observed is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.