MCQ Collection
EJU Physics MCQs
Practice EJU Physics questions with answers and explanations.
Choose an option to check your answer.
Correct Answer: D. Its frequency increases
Explanation:
The Doppler effect raises observed frequency for an approaching source.
Choose an option to check your answer.
Choose an option to check your answer.
Choose an option to check your answer.
Correct Answer: C. 84 m
Explanation:
Distance = speed × time.
Choose an option to check your answer.
Correct Answer: D. 24 m/s
Explanation:
Wave speed v=fλ.
Choose an option to check your answer.
Correct Answer: A. 2 A
Explanation:
Ohm’s law: I=V/R.
Choose an option to check your answer.
Correct Answer: D. 5.13333 °C
Choose an option to check your answer.
Correct Answer: B. It remains constant
Explanation:
Total momentum is conserved in an isolated system.
Choose an option to check your answer.
Correct Answer: B. Its frequency increases
Explanation:
The Doppler effect raises observed frequency for an approaching source.
Choose an option to check your answer.
Correct Answer: C. 4.86667 °C
Choose an option to check your answer.
Correct Answer: A. It remains constant
Explanation:
Total momentum is conserved in an isolated system.
Choose an option to check your answer.
Correct Answer: D. 2.2 A
Explanation:
Ohm’s law: I=V/R.
