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A particle is oscillating on the x-axis with an amplitude 2 cm about the point x_0=10 cm with a frequency. A concave mirror of focal length 5 cm is…

JEE Main 2018 — Physics Optics

2018mcqhard

A particle is oscillating on the xxx-axis with an amplitude 2cm2\mathrm{cm}2cm about the point x0=10cm{x}_{0}=10 \mathrm{cm}x0​=10cm with a frequency. A concave mirror of focal length 5cm5\mathrm{cm}5cm is placed at the origin (see figure).

JEE Main 2018 Physics, Ray Optics — question figure

Identify the correct statements?

(i) The image executes periodic motion.

(ii) The image executes non-periodic motion.

(iii) The turning points of the image are asymmetric with respect to the image of the point at X=10cmX=10 \mathrm{cm}X=10cm.

(iv) The distance between the turning points of the oscillation of the image is 10021cm\frac{100}{21} \mathrm{cm}21100​cm.

Official previous-year question

Held on 15 Apr 2018 · Verified 6 Jul 2026.

Options

  1. A

    (ii, iii)

  2. B

    (i, iii, iv)

  3. C

    (i, iv)

  4. D

    (ii, iv)

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