Most Important MCQ Questions for Class 10 Science: Ch 10 Light Reflection and Refraction

Find here the Most Important NCERT chapter-wise Multiple Choice Questions from Class 10 Science with Answers Pdf free download. this may assist you to understand and check your knowledge about the chapters Most Important MCQ. Students also can take a free test of the Multiple Choice Questions of The chapters Most Important MCQ. Each question has four options followed by the right answer. These Most Important MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

Q1. Which of the following mirror is used by a dentist to examine a small cavity?

(a) Convex mirror
(b) Plane mirror
(c) Concave mirror
(d) Combination of convex and concave mirror

(c) Concave mirror

(a) 0.25 m
(b) 1.0 m
(c) 0.5 m
(d) 0.125 m

(c) 0.5 m

Q3. An object at a distance of + 15 cm is slowly moved towards the pole of a convex mirror. The image will get

a) shortened and real
(b) enlarged and real
(c) enlarge and virtual
(d) diminished and virtual

(d) diminished and virtual

(a) 0.25 m
(b) 1.0 m
(c) 0.5 m
(d) 0.125 m

(d) 0.125 m

(a) Plane
(b) Concave
(c) Convex
(d) Plano convex

(b) Concave

Q6. For a real object, which of the following can produce a real image?

(a) Plane mirror
(b) Concave mirror
(c) Concave lens
(d) Convex mirror

(b) Concave mirror

Q7. The nature of the image formed by concave mirror when the object is placed between the focus (F) and centre of curvature (C) of the mirror observed by us is

(a) real, inverted and diminished
(b) virtual, erect and smaller in size
(c) real, inverted and enlarged
(d) virtual, upright and enlarged

(c) real, inverted and enlarged

Q8. In torches, search lights and head lights of vehicles the bulb is placed

(a) Between pole and focus
(b) Very near to the focus
(c) Between focus and centre of curvature
(d) At centre of curvature

(b) Very near to the focus

(a) 10 cm
(b) 20 cm
(c) 30 cm
(d) 40 cm

(b) 20 cm

(a) 15 cm
(b) 30 cm
(c) 45 cm
(d) 60 cm

(b) 30 cm

(a) Zero
(b) Infinite
(c) 25 cm
(d) 25 cm

(b) Infinite

Q12. The relationship between focal length and radius of curvature is:

(a) f = R
(b) f = \frac{1}{R}
(c) 2f = R
(d) f = 2R

(c) 2f = R

(a) 6 cm
(b) 12 cm
(c) 18 cm
(d) 24 cm

(d) 24 cm

(a) 5 cm
(b) 10 cm
(c) 20 cm
(d) 0 cm

(b) 10 cm

Q15. The image formed by a mirror is always straight whatever will be the distance, then mirror is:

(a) Only plane
(b) Only concave
(c) Only Convex
(d) Either plane or convex

(a) Only plane

Q16. The image due to convex mirror is always formed:

(a) between centre of curvature and focus
(b) between centre of curvature and infinity
(c) between pole and focus
(d) anywhere

(c) between pole and focus

Q17. A concave mirror gives virtual, refract and enlarged image of the object but image of smaller size than the size of the object is

(a) At infinity
(b) Between F and C
(c) Between P and F
(d) At E

(c) Between P and F

Q18. In optics an object which has higher refractive index is called

(a) Optically rarer
(b) Optically denser
(c) Optical density
(d) Refractive ind

(b) Optically denser

Q19. The optical phenomena, twinkling of stars, is due to

(a) Atmospheric reflection
(b) Total reflection
(c) Atmospheric refraction
(d) Total refraction

(c) Atmospheric refraction

Q20. Convex lens focus a real, point sized image at focus, the object is placed

(a) At focus
(b) Between F and 2F
(c) At infinity
(d) At 2F

(c) At infinity

(a) Metre
(b) Centimeter
(c) Diopter
(d) M-1

(c) Diopter

Q22. The radius of curvature of a mirror is 20cm the focal length is

(a) 20cm
(b) 10cm
(c) 40cm
(d) 5cm

(b) 10cm

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