51. An object of height 3 cm at a distance of 5 cm is placed from a lens with magnification 3. The image height and distance are
Answer: C. 9 cm and 15 cm
Physics Class 10 Unit 14: Optics MCQs
80 multiple choice questions with the correct answer for each. Tap an option to check yourself, or switch on "Show all answers". This is page 2 of 2.
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52. An object is placed at 10 cm from a convex lens of focal length 5 cm. The linear magnification is
Answer: B. 1
53. A real image
Answer: B. can be caught on a screen
54. A real image is always
Answer: A. inverted
55. A magnifying glass uses a
Answer: C. convex lens
56. To use a magnifying glass, the object must be placed
Answer: D. closer than the focal point
57. A magnifying glass forms an image that is
Answer: D. enlarged, erect and virtual
58. The splitting of white light into seven colours by a prism is called
Answer: A. dispersion
59. In a prism, the colour that bends the most is
Answer: C. violet
60. A camera forms on the film or CCD an image that is
Answer: B. real and inverted
61. The number of colours in the visible spectrum is
Answer: C. seven
62. The seven colours of the visible spectrum in order from red are
Answer: B. red, orange, yellow, green, blue, indigo, violet
63. Ibn al-Haytham is known as the
Answer: D. father of optics
64. Red light has the
Answer: A. longest wavelength and lowest frequency
65. Violet light has the
Answer: C. shortest wavelength and highest frequency
66. The visible spectrum lies in the wavelength range of about
Answer: B. 400 to 750 nm
67. In the human eye, the image is formed on the
Answer: A. retina
68. In the human eye, the image formed on the retina is
Answer: D. real and inverted
69. The near point of the eye is at
Answer: C. 25 cm
70. Rods are used for
Answer: D. night vision
71. Cones are used for
Answer: A. colour vision
72. Short-sightedness (myopia) is the condition in which a person sees
Answer: B. near objects clearly but distant objects blurry
73. In myopia, the image forms
Answer: D. in front of the retina
74. Myopia is corrected using a
Answer: A. concave lens
75. Long-sightedness (hypermetropia) is the condition in which a person sees
Answer: C. distant objects clearly but near objects blurry
76. In hypermetropia, the image forms
Answer: B. behind the retina
77. Hypermetropia is corrected using a
Answer: D. convex lens
78. Gravitational lensing occurs because massive objects
Answer: B. curve space-time and bend light
79. Einstein rings are seen due to
Answer: A. gravitational lensing
80. Acoustic lenses are used to
Answer: C. focus or diverge sound waves
About Physics Class 10 Unit 14 MCQs (Federal Board)
These 80 Physics MCQs cover Class 10 Unit 14: Optics of the Federal Board (FBISE) SSC-II (Class 10) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. The questions are split over 2 pages of 50. You can also read the Optics notes for this chapter. Download the Optics MCQs as a PDF using the button at the top of this page.