Preparing for the Joint Entrance Exam (JEE) can be a daunting task. With so many subjects to cover and so many topics to study, it can be challenging to know where to start. One essential topic in the JEE Mains syllabus is the Ray Optics and Optical Instruments. In this article, we will provide 50+ MCQ questions on the Ray Optics and Optical Instruments, along with detailed solutions to help you prepare for the JEE Mains exam.
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These 50+ MCQ questions are selected by the experts of studyrate.in and these are more difficult questions, which will help you to better understand Ray Optics and Optical Instruments JEE Mains MCQ Questions with Answers.
Ray Optics and Optical Instruments JEE Mains MCQ
When a ray of light goes from a rarer medium to a denser medium, which of the following properties remains unchanged?
(a) Speed
(b) Wavelength
(c) Frequency
(d) Amplitude
The refractive index of a medium with respect to vacuum is:
(a) Always less than 1
(b) Always greater than 1
(c) Equal to 1
(d) None of the above
The phenomenon of dispersion of light is due to:
(a) Reflection
(b) Refraction
(c) Scattering
(d) Diffraction
When light passes through a prism, it:
(a) Bends away from the base
(b) Bends towards the base
(c) Does not bend
(d) None of the above
The critical angle for a given pair of media is 45°. The refractive index of the medium with higher refractive index is:
(a) 1.41
(b) 1.73
(c) 2
(d) 1.33
The angle of deviation of a ray of light passing through a prism depends on:
(a) The angle of incidence
(b) The angle of refraction
(c) The angle of prism
(d) All of the above
The radius of curvature of a plano-convex lens is 20 cm. The focal length of the lens will be:
(a) 10 cm
(b) 20 cm
(c) 40 cm
(d) 80 cm
When a concave lens is placed in front of a candle flame, the image formed is:
(a) Virtual and magnified
(b) Real and magnified
(c) Virtual and diminished
(d) Real and diminished
The power of a lens is -4D. The focal length of the lens is:
(a) 0.25 m
(b) 0.5 m
(c) 4 m
(d) -0.25 m
In Young’s double-slit experiment, the fringes become wider when:
(a) The separation between the slits is increased
(b) The separation between the slits is decreased
(c) The distance between the slits and the screen is increased
(d) The distance between the slits and the screen is decreased
The resolving power of an optical instrument depends on:
(a) Wavelength of light used
(b) Diameter of the objective lens
(c) Focal length of the objective lens
(d) All of the above
The lens formula is given by:
(a) 1/f = 1/v – 1/u
(b) 1/f = 1/u + 1/v
(c) 1/f = u + v
(d) 1/f = u – v
The magnifying power of a telescope is equal to:
(a) Focal length of the objective lens / Focal length of the eyepiece
(b) Focal length of the eyepiece / Focal length of the objective lens
(c) Focal length of the objective lens x Focal length of the eyepiece
(d) Focal length of the eyepiece x Focal length of the objective lens
When a light ray passes through the optical center of a lens, the ray:
(a) Undergoes refraction
(b) Does not undergo refraction
(c) Gets absorbed by the lens
(d) None of the above
The focal length of a convex lens is 20 cm. Its power is:
(a) -0.5 D
(b) 0.5 D
(c) -5 D
(d) 5 D
The distance between the pole and the focus of a concave mirror is:
(a) Focal length
(b) Radius of curvature
(c) Half of the radius of curvature
(d) Twice the focal length
The angle of incidence at which the angle of refraction becomes 90° is called:
(a) Angle of deviation
(b) Angle of emergence
(c) Critical angle
(d) Angle of incidence
A convex lens always forms a _ image for an object placed anywhere in front of it.
(a) Virtual and erect
(b) Real and erect
(c) Virtual and inverted
(d) Real and inverted
The lens used in a camera is:
(a) Convex lens
(b) Concave lens
(c) Plano-convex lens
(d) Plano-concave lens
The angle between the incident ray and the normal is 60°. The angle of refraction will be:
(a) Less than 60°
(b) Greater than 60°
(c) Equal to 60°
(d) Cannot be determined
When an object is placed at the focus of a concave lens, the image formed is:
(a) Virtual and magnified
(b) Real and magnified
(c) Virtual and diminished
(d) Real and diminished
A concave mirror forms a real, inverted, and diminished image. The object distance must be:
(a) Greater than the focal length
(b) Less than the focal length
(c) Equal to the focal length
(d) Can be any distance
When a ray of light enters a glass slab, it bends:
(a) Towards the normal
(b) Away from the normal
(c) Along the normal
(d) Depends on the angle of incidence
A compound microscope is used to view an object. The final image formed by the eyepiece is:
(a) Real and inverted
(b) Virtual and inverted
(c) Real and erect
(d) Virtual and erect
A light ray passes from medium A to medium B with an angle of incidence of 30°. If the refractive index of medium B with respect to A is 1.5, the angle of refraction will be:
(a) 19.47°
(b) 30°
(c) 40.45°
(d) 45°
The phenomenon of total internal reflection is based on the principle of:
(a) Refraction
(b) Reflection
(c) Scattering
(d) Interference
A real image can be obtained by a:
(a) Concave mirror
(b) Convex mirror
(c) Concave lens
(d) Convex lens
The power of a lens is measured in:
(a) Diopters
(b) Watts
(c) Meters
(d) Lux
When an object is placed at the center of curvature of a concave mirror, the image formed is:
(a) Virtual and magnified
(b) Real and magnified
(c) Virtual and diminished
(d) Real and diminished
The phenomenon of dispersion is responsible for the formation of:
(a) Rainbow
(b) Shadows
(c) Interference pattern
(d) Diffraction pattern
We hope there JEE MCQ of Class 12 Ray Optics and Optical Instruments will help you to score an excellent rank in JEE Mains and Advanced. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
