AIPMT PRELIMS2007Physics-Motion in One Dimension
AIPMT PRELIMS 2007 Physics Average Speed MCQ Question
Type: MCQ-numerical-Medium-Class 11
A car moves from X to Y with a uniform speed vᵤ and returns to Y with a uniform speed v_d. The average speed for this round trip is
A
√vᵤv_d
B
2vᵤv_d / (v_d + vᵤ)
C
(vᵤ + v_d) / 2
D
2v_dvᵤ / (v_d + vᵤ)
Correct Answer
Option D
Detailed Explanation
The average speed for the round trip is given by the harmonic mean of the two speeds: 2vᵤv_d / (vᵤ + v_d).
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