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The velocity of image when object and mirror both are moving towards each other with velocities 4 ms⁻¹ and 5 ms⁻¹ respectively, is
Options
(a) (-14ms⁻¹)
(b) 15ms⁻¹
(c) (-9ms⁻¹)
(d) 14ms⁻¹
Correct Answer:
(-14ms⁻¹)
Explanation:
ʋ(OM) = Velocity of object with respect to mirror = -ʋ(IM)
(Here, -ʋ(IM) = velocity of image with respect to mirror)
ʋ(o) – ʋ(M) = -[ʋ(I) – ʋ(M)]
4 ms⁻¹ – (-5 ms)⁻¹ = -ʋ(I) + (-5 ms⁻¹)
ʋ(I) = – 14 ms⁻¹
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Topics: Ray Optics
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A capacitor is charged to 200 volt. It has a charge of 0.1 coulomb.
- A 1m long wire of diameter 0.31 mm has a resistance of 4.2Ω. If it is replaced by
- Einstein’s photoelectric equation is
- The current in the windings of a toroid is 2.0 A. There are 400 turns
- The focal lengths of a converging lens are fᵥ and fᵣ for violet and red lights
Topics: Ray Optics (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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