Refer to JEE Physics Ray Optics and Optical Instruments MCQs Set B provided below available for download in Pdf. The MCQ Questions for Full Syllabus Physics with answers are aligned as per the latest syllabus and exam pattern suggested by JEE (Main), NCERT and KVS. Multiple Choice Questions for Ray Optics and Optical Instruments are an important part of exams for Full Syllabus Physics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for JEE (Main) Full Syllabus Physics and also download more latest study material for all subjects
MCQ for Full Syllabus Physics Ray Optics and Optical Instruments
Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Ray Optics and Optical Instruments in Full Syllabus.
Ray Optics and Optical Instruments MCQ Questions Full Syllabus Physics with Answers
Question: In displacement method, convex lens forms a real image of an object for its two different positions. If heights of the images in two cases be 24 cm and 6 cm, then the height of the object is
- a) 12 cm
- b) 6 cm
- c) 36 cm
- d) 3 cm
Answer: 12 cm
Question:
- a) 2 and 5 are parallel
- b) 6 and 3 are parallel
- c) 4 and 5 are parallel
- d) 3 and 4 are parallel
Answer: 2 and 5 are parallel
Question: A plane glass is kept over a coloured word ‘VIBGYOR’, where colour of letters as same as the colours in white light start by letter, the letter which appears least raised is
- a) R
- b) Y
- c) O
- d) V
Answer: R
Question: The near point of a person is 75 cm. In order that he may be able to read book at a distance 30 cm. The power of spectacles lenses should be
- a) +2 D
- b) +3 D
- c) +3.75 D
- d) –2 D
Answer: +2 D
Question: If a lens is moved towards the object from a distance of 40 cm to 30 cm, the magnification of the image remains the same (numarically). The focal length of the lens is
- a) 35 cm
- b) 18 cm
- c) 15 cm
- d) 20 cm
Answer: 35 cm
Question: A convex lens of power +2.5 D is in contact with a concave lens of focal length 25 cm. The power of combination is
- a) –1.5 D
- b) 0 D
- c) +1.5 D
- d) +6.5 D
Answer: –1.5 D
Question: For a telescope in normal adjustment, the length of telescope is found to be 27 cm. If the magnifying power of telescope, at normal adjustment is 8, the focal lengths of objective and eye piece are respectively
- a) 24 cm, 3 cm
- b) 27 cm, 8 cm
- c) 12 cm, 6 cm
- d) 27 cm, 9 cm
Answer: 24 cm, 3 cm
Question: A converging lens of focal length 30 cm is placed in contact with another converging lens of unknown focal length, then possible value for focal length of combination is
- a) 15 cm
- b) 60 cm
- c) 36 cm
- d) –12 cm
Answer: 15 cm
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a) Must be straight line and horizontal
- b) Must be projectile
- c) Must be straight line and vertical
- d)
Answer: Must be straight line and horizontal
Question: In displacement method we use a lens of focal length f and distance between object and screen is 60 cm. Possible value for focal length is
- a) 12 cm
- b) 20 cm
- c) 30 cm
- d) –15 cm
Answer: 12 cm
Question:
- a) Red
- b) Green
- c) Yellow
- d) Blue
Answer: Red
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a) +15 cm
- b) +30 cm
- c) –30 cm
- d) –15 cm
Answer: +15 cm
Question: The distance between a real object and its real image is 56 cm formed by converging lens, focal length of lens is
- a)
- b) f > 14
- c) f = 14
- d) f = 28
Answer:
Question:
- a)
- b) 80 cm
- c) 40 cm
- d)
Answer:
Question: Maximum magnification produced by simple micro-scope of focal length f = 5 cm is
- a) 6
- b) 8
- c) 7
- d) 5
Answer: 6
Question: A rod of length 10 cm lies along the principal axis of a concave mirror of focal length 10 cm in such a way that its end closer to the pole is 20 cm away from the mirror. The length of the image is
- a) 5 cm
- b) 2.5 cm
- c) 15 cm
- d) 10 cm
Answer: 5 cm
Question: A tall man of height 6 feet, want to see his full image. Then required minimum length of the mirror will be
- a) 6 feet
- b) Any length
- c) 3 feet
- d) 12 feet
Answer: 6 feet
Question: Images formed by an object placed between two plane mirrors whose reflecting surfaces make an angle of 90° with one another lie on a
- a) Circle
- b) Ellipse
- c) Parabola
- d) Straight line
Answer: Circle
More Questions..................................
Question:
- a)
- b)
- c)
- d) Combination behaves like converging lens
Answer:
Question:
- a) 45°
- b) 60°
- c) 30°
- d) 15°
Answer: 45°
Question: Which of the following is not due to total internal reflection?
- a) Difference between apparent and real depth of a pond
- b) Mirage on hot summer days
- c) Working of optical fibre
- d) Brilliance of diamond
Answer: Difference between apparent and real depth of a pond
Question: In optical fibres, the refractive index of the core is
- a) Greater than that of the cladding
- b) Smaller than that of the cladding
- c) Equal to that of the cladding
- d) Independent of that of the cladding
Answer: Greater than that of the cladding
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a) sin–1 (tan r)
- b) tan–1 (sin r)
- c) sin–1 (cot r)
- d)
Answer: sin–1 (tan r)
Question: The refractive index of water is 1.33. What will be the speed of light in water?
- a) 2.25 × 108 m/s
- b) 3 × 108 m/s
- c) 1.33 × 108 m/s
- d) 4 × 108 m/s
Answer: 2.25 × 108 m/s
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A disc is placed on a surface of pond which has refractive index 5/3. A source of light is placed 4 m below the surface of liquid. The minimum radius of disc needed so that light is not coming out is
- a) 3 m
- b) 6 m
- c) 4 m
- d)
Answer: 3 m
Question:
- a)
- b)
- c)
- d)
Answer:
Question: Optical fibre are based on
- a) Total internal reflection
- b) Refraction
- c) Less scattering
- d) Less absorption coefficient
Answer: Total internal reflection
Question:
- a)
- b)
- c)
- d)
Answer:
Question: The frequency of a light wave in a material is 2 × 1014 Hz and wavelength is 5000 Å. The refractive index of material will be
- a) 3.00
- b) 1.50
- c) 1.33
- d) 1.40
Answer: 3.00
Question:
- a) 1.8 × 108 m/s
- b) 1.2 × 108 m/s
- c) 3.0 × 108 m/s
- d) 2.4 × 108 m/s
Answer: 1.8 × 108 m/s
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a)
- b)
- c)
- d)
Answer:
Question: A ray of light is incident on a 60º prism at the minimum deviation position. The angle of refraction at the first face (i.e., incident face) of the prism is
- a) 30º
- b) Zero
- c) 45º
- d) 60º
Answer: 30º
Question:
- a) 14 cm
- b) 20 cm
- c) 7 cm
- d) 21 cm
Answer: 14 cm
Question:
- a)
- b)
- c)
- d)
Answer:
Question:
- a) 12 m
- b) 6 m
- c) 42 m
- d)
Answer: 12 m
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MCQs for Ray Optics and Optical Instruments Physics Full Syllabus
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