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Ray Optics and Optical Instruments MCQs: Ray optics and optical instruments are core topics in physics, essential for understanding light behavior, image formation, and the functioning of various optical devices. These concepts are fundamental for NEET (National Eligibility cum Entrance Test) aspirants, as they form a significant part of the NEET physics syllabus. Mastering ray optics and optical instruments is crucial for solving complex problems related to lenses, mirrors, and optical systems, making it an important focus area for students.
Ray Optics and Optical Instruments MCQs
Students can find a variety of MCQs on ray optics and optical instruments specifically designed for NEET. These MCQs cover essential topics such as the principles of reflection and refraction, image formation by lenses and mirrors, and the working of optical instruments like microscopes and telescopes. Practicing these ray optics MCQs with answers helps students solidify their understanding. It enables them to tackle similar questions confidently in the NEET exam. Engaging with these Ray Optics NEET Questions for 2024 ensures a thorough grasp of key concepts, ultimately boosting exam readiness and helping students in achieving high scores in physics.
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Ray Optics NEET MCQ Questions with solutions
Here are 30 multiple-choice questions (MCQs) on Ray Optics NEET Questions with solutions. These questions cover fundamental principles and applications, such as reflection, refraction, lenses, mirrors, and optical devices, providing a comprehensive practice set for NEET aspirants.
1. When an object is placed between the focal point and a concave mirror, the image formed will be:
A) Virtual, upright, and larger than the object
B) Real, inverted, and larger than the object
C) Real, inverted, and smaller than the object
D) Virtual, inverted, and smaller than the object
Answer: A) Virtual, upright, and larger than the object
2. For a convex lens, if an object is placed far away (at infinity), where will the image be formed?
A) At the focal point on the other side of the lens
B) At double the focal distance on the opposite side
C) Right at the optical center
D) At infinity on the same side
Answer: A) At the focal point on the other side of the lens
3. Which type of mirror is typically used as a rear-view mirror in vehicles and why?
A) Concave mirror, because it produces a real image
B) Plane mirror, because it produces a virtual image
C) Convex mirror, because it provides a wider field of view
D) Concave mirror, because it magnifies objects
Answer: C) Convex mirror, because it provides a wider field of view
4. When light passes from air into glass, which of the following changes occur?
A) Speed decreases, wavelength decreases
B) Speed increases, wavelength decreases
C) Speed decreases, wavelength increases
D) Both speed and wavelength remain unchanged
Answer: A) Speed decreases, wavelength decreases
5. The power of a convex lens is +2D. What is its focal length?
A) 0.5 meters
B) 1 meter
C) 2 meters
D) 0.2 meters
Answer: B) 1 meter
6. Which phenomenon is responsible for the formation of a rainbow?
A) Reflection only
B) Refraction only
C) Dispersion and total internal reflection
D) Scattering
Answer: C) Dispersion and total internal reflection
7. How much magnification does a flat mirror produce?
A) 0
B) +1
C) -1
D) Infinite
Answer: B) +1
8. What optical device combines a convex and a concave lens component?
A) Simple microscope
B) Compound microscope
C) Telescope
D) Magnifying glass
Answer: B) Compound microscope
9. Total internal reflection occurs when light:
A) Moves from a denser to a rarer medium at an angle greater than the critical angle
B) Moves from a rarer to a denser medium at any angle
C) Moves from a rarer to a denser medium at an angle less than the critical angle
D) Moves within the same medium
Answer: A) Moves from a denser to a rarer medium at an angle greater than the critical angle
10. The mirror used in solar concentrators is typically:
A) Convex mirror
B) Plane mirror
C) Concave mirror
D) Cylindrical mirror
Answer: C) Concave mirror
11. The focal length of a convex lens is 10 cm. Where should an object be placed to get a real image of the same size as the object?
A) 5 cm from the lens
B) 10 cm from the lens
C) 20 cm from the lens
D) 15 cm from the lens
Answer: C) 20 cm from the lens
12. If a ray of light passes through the optical center of a lens, it will:
A) Refract and bend towards the normal
B) Refract and bend away from the normal
C) Pass undeviated
D) Reflect back into the same medium
Answer: C) Pass undeviated
13. A concave mirror’s focal length is 15 cm. What is its radius of curvature?
A) 7.5 cm
B) 15 cm
C) 30 cm
D) 60 cm
Answer: C) 30 cm
14. What type of image is formed by a convex mirror, regardless of the object’s position?
A) Real and upright
B) Virtual and upright
C) Real and inverted
D) Virtual and inverted
Answer: B) Virtual and upright
15. In a microscope, the eyepiece and objective lens are placed such that:
A) The eyepiece forms a real image
B) A virtual picture is created by the objective lens.
C) The objective lens forms a real image
D) Both lenses form real images
Answer: C) The objective lens forms a real image
16. Which optical phenomenon makes a diamond sparkle?
A) Dispersion of light
B) Total internal reflection
C) Scattering of light
D) Refraction only
Answer: B) Total internal reflection
17. What type of lens is used in a magnifying glass?
A) Concave lens
B) Convex lens
C) Cylindrical lens
D) Biconcave lens
Answer: B) Convex lens
18. A ray parallel to the principal axis of a concave mirror after reflection passes through:
A) The focal point
B) The center of curvature
C) The optical center
D) A point halfway to the focal point
Answer: A) The focal point
19. When light enters a denser medium from a rarer medium, it bends:
A) Away from the normal
B) Towards the normal
C) Along the normal
D) None of the above
Answer: B) Towards the normal
20. Which lens has a negative focal length?
A) Convex lens
B) Concave lens
C) Plane lens
D) None of the above
Answer: B) Concave lens
21. What is the effect on the focal length of a concave mirror if it is immersed in water?
A) Increases
B) Decreases
C) Remains the same
D) Becomes zero
Answer: C) Remains the same
22. Which of the following conditions is necessary for total internal reflection to occur?
A) Light must travel from a rarer to a denser medium
B) Light must travel from a denser to a rarer medium
C) The angle of incidence must be zero
Answer: B) Light must travel from a denser to a rarer medium
23. An object placed at the focal point of a convex lens will produce an image that is:
A) At infinity
B) Same size as the object
C)Between the lens and the focal point
D) Concurrent with the object
Answer: A) At infinity
24. A convex mirror with a focal length of -10 cm is used. What is the nature of the image formed for any position of the object?
A) Real and inverted
B) Virtual and upright
C) Real and upright
D) Virtual and inverted
Answer: B) Virtual and upright
25. Which instrument uses a combination of two convex lenses to magnify small objects?
A) Telescope
B) Simple microscope
C) Compound microscope
D) Camera
Answer: C) Compound microscope
26. The angle of reflection when a light beam hits a flat mirror at a 30° angle is:
A) 60°
B) 0°
C) 30°
D) 45°
Answer: C) 30°
27. A convex mirror with a focal length of 20 cm will form an image that is always:
A) Real and smaller than the object
B) Virtual, upright, and smaller than the object
C) Real, upright, and larger than the object
D) Virtual, inverted, and larger than the object
Answer: B) Virtual, upright, and smaller than the object
