Here we will provide you the 50+ MCQ Questions of Ray Optics and Optical Instruments for NEET-UG. Ray Optics and Optical Instruments is the chapter 9 in Class XII or Class 12 Physics NCERT Unit Ray Optics and Optical Instruments NEET (conducted by NTA) is based on the NCERT book.
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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 NEET MCQ Questions with Answers.
Ray Optics and Optical Instruments NEET MCQ
A thin prism of refracting angle 4° and refractive index 1.5 is combined with another prism of refracting angle 3° and refractive index 1.3. The deviation produced by the combination of the prisms is:
a) 2.7°
b) 3.7°
c) 4.7°
d) 5.7°
An object is placed at a distance of 40 cm from a convex lens of focal length 20 cm. The size of the image formed is twice the size of the object. What is the distance of the image from the lens?
a) 10 cm
b) 20 cm
c) 40 cm
d) 80 cm
A thin convex lens of focal length 20 cm is cut into two halves along a plane parallel to the principal axis. The refractive index of the material of the lens is 1.5. The focal length of each half of the lens is:
a) 10 cm
b) 15 cm
c) 20 cm
d) 30 cm
A small object is placed at a distance of 6 cm from a concave mirror of focal length 12 cm. The size of the image formed is:
a) Same as the size of the object
b) Twice the size of the object
c) Half the size of the object
d) One-third the size of the object
A beam of light passing through air enters a medium with refractive index 1.5. If the angle of incidence is 45°, the angle of refraction is:
a) 30°
b) 45°
c) 60°
d) 75°
A converging lens of focal length 20 cm and a diverging lens of focal length 15 cm are kept in contact. The focal length of the combination is:
a) 12 cm
b) 27 cm
c) 60 cm
d) 300 cm
A convex lens of focal length 10 cm is placed in contact with a concave lens of focal length 20 cm. The focal length of the combination is:
a) 5 cm
b) 10 cm
c) 15 cm
d) 20 cm
A thin convex lens is made of glass of refractive index 1.5. The radius of curvature of the lens is 30 cm. The focal length of the lens is:
a) 10 cm
b) 15 cm
c) 20 cm
d) 30 cm
A glass slab of refractive index 1.5 is kept in air. A parallel beam of light is incident on the slab at an angle of incidence of 30°. The angle of refraction is:
a) 20°
b) 30°
c) 45°
d) 60°
A convex lens of focal length 30 cm and a concave lens of focal length 20 cm are placed in contact. The combination acts as a:
a) Diverging lens of focal length 60 cm
b) Converging lens of focal length 60 cm
c) Diverging lens of focal length 50 cm
d) Converging lens of focal length 50 cm
A converging lens of focal length 10 cm is cut into two equal halves along a plane perpendicular to its principal axis. The focal length of each half is:
a) 10 cm
b) 20 cm
c) 40 cm
d) 80 cm
A convex lens of focal length 20 cm and a concave lens of focal length 30 cm are placed in contact. The combination acts as a:
a) Diverging lens of focal length 60 cm
b) Converging lens of focal length 60 cm
c) Diverging lens of focal length 15 cm
d) Converging lens of focal length 15 cm
A convex lens of focal length 20 cm is kept in water of refractive index 4/3. The focal length of the lens in water is:
a) 15 cm
b) 20 cm
c) 25 cm
d) 30 cm
A convex lens of focal length 20 cm is used to form an image of an object placed at a distance of 40 cm from the lens. The image is formed at a distance of 60 cm from the lens. The refractive index of the material of the lens is:
a) 1.25
b) 1.5
c) 1.75
d) 2.0
An object is placed 15 cm in front of a concave mirror of focal length 10 cm. The image formed is:
a) Virtual, erect and magnified
b) Virtual, erect and diminished
c) Real, inverted and magnified
d) Real, inverted and diminished
The magnification produced by a concave mirror is always:
a) Positive
b) Negative
c) Zero
d) Infinity
A convex lens of focal length 10 cm is placed in water of refractive index 4/3. The focal length of the lens in water is:
a) 6.67 cm
b) 7.5 cm
c) 10 cm
d) 13.33 cm
A concave mirror of focal length 10 cm forms an image of an object placed at a distance of 20 cm from the mirror. The magnification produced by the mirror is:
a) -0.5
b) -1.0
c) -2.0
d) -3.0
An object is placed at a distance of 20 cm in front of a convex lens of focal length 10 cm. The image formed is:
a) Virtual, erect, and magnified
b) Virtual, erect and diminished
c) Real, inverted and magnified
d) Real, inverted and diminished
A convex lens of focal length 10 cm is placed in air. A concave lens of focal length 15 cm is placed at a distance of 10 cm from the convex lens. The focal length of the combination is:
a) 5 cm
b) 10 cm
c) 15 cm
d) 20 cm
A convex lens of focal length 20 cm and a concave lens of focal length 10 cm are placed in contact. The focal length of the combination is:
a) 6.67 cm
b) 10 cm
c) 15 cm
d) 30 cm
A concave mirror of focal length 20 cm forms an image of an object placed at a distance of 30 cm from the mirror. The magnification produced by the mirror is:
a) -0.5
b) -1.0
c) -2.0
d) -3.0
An object is placed at a distance of 15 cm in front of a concave mirror of focal length 10 cm. The image formed is:
a) Virtual, erect and magnified
b) Virtual, erect and diminished
c) Real, inverted and magnified
d) Real, inverted and diminished
A convex lens of focal length 30 cm is used to form an image of an object placed at a distance of 60 cm from the lens. The image is formed at a distance of 20 cm from the lens. The magnification produced by the lens is:
a) 0.5
b) 1.0
c) 1.5
d) 2.0
A convex lens and a concave lens of equal focal length are placed in contact. The focal length of the combination is:
a) Infinity
b) Zero
c) Equal to the focal length of the individual lenses
d) Less than the focal length of the individual lenses
An object is placed 10 cm in front of a concave mirror of focal length 15 cm. The image formed is:
a) Real, inverted and magnified
b) Real, inverted and diminished
c) Virtual, erect and magnified
d) Virtual, erect and diminished
A convex lens of focal length 20 cm and a concave lens of focal length 15 cm are placed in contact. The focal length of the combination is:
a) 7.5 cm
b) 10 cm
c) 20 cm
d) 35 cm
A concave lens of focal length 20 cm forms an image of an object placed at a distance of 15 cm from the lens. The magnification produced by the lens is:
a) -0.75
b) -0.5
c) -0.33
d) -0.25
An object is placed at a distance of 10 cm in front of a concave mirror of focal length 20 cm. The image formed is:
a) Real, inverted and magnified
b) Real, inverted and diminished
c) Virtual, erect and magnified
d) Virtual, erect and diminished
We hope there NEET MCQ of Class 12 Ray Optics and Optical Instruments will help you to score an excellent rank in NEET-UG. If you have any queries feel free to write in the comments section. We at Study Rate are always ready to serve our students.
