Daily Practice Problems for Class 10 Science (Updated for 2026-27 Exam)

Question 1:

Light is refracted when it travels at an angle from water into air because

(a) Its speed is increased

(b) Its speed is decreased

(d) Light is travelling from a less (lower) denser medium to a denser medium.

Question 2:

A student studies that a convex lens always forms a virtual image irrespective of its position. What causes the convex mirror to always form a virtual image?

(a) because the reflected ray never intersects

(b) because the reflected ray converges at a single point

(d) because the incident ray of a convex mirror gets absorbed in the mirror

Question 3:

The swimming pool appears to be less deep than it actually is. Which of the following phenomenon is responsible for this?

(a) Reflection of Light

(b) Diffusion of Light

(d) Scattering of Light

Question 4:

Refractive index of diamond is 2.42 and that of carbon disulphide is 1.63. calculate refractive index of diamond with respect to carbon disulphide.

(a) 1.48

(b) 0.67

(d) 1.63

Question 5:

An object kept at 20 cm from a spherical mirror gives rise to an image 15 cm behind the mirror. The focal length of the mirror is:

(a) -60 cm

(b) -30 cm

(d) 60 cm

Question 6:

A coin is fixed at the bottom of a bowl and some water is poured into it. What changes will you observe in coin and why?

(a) Raised, refraction of light

(b) Raised, reflection of light

(d) Lowered, reflection of light

Question 7:

The full-length image of a distant tall building can be seen by using

(a) concave mirror

(b) convex mirror

(d) convex lens

Question 8:

An object is placed between two plane parallel mirrors. Why do the distant images get fainter and fainter?

Question 9:

What is the number of images of an object held between two parallel plane mirrors?

Question 10:

A concave mirror is held in water. What would be the change in the focal length of the mirror?

Question 11:

Why does a diamond shine?

Question 12:

A candle is held 3 cm away from a concave mirror of radius of curvature 24 cm. where is the image formed? What is the nature of the image?

Question 13:

A square wire of side 3 cm is placed 25 cm away from a concave mirror of focal length 10 cm. what is the area enclosed by the image of the wire? The centre of the wire is on the axis of the mirror, with its two sides normal to the axis.

Question 14:

An object is placed 20 cm in front of concave mirror whose focal length is 25 cm. what is the magnification of the object?

Question 15:

Find the focal length and power of a plano convex lens, when radius of curved surface is 15 cm and μ = 1.5 cm?

Question 16:

Within a glass slab, a double convex air bubble is formed. How would the air bubble behave?

Question 17:

A 2.0 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. The distance of the object from the lens is 15 cm. Find the nature, position and size of the image. Also find its magnification.

Question 18:

Define 1 dioptre of power of a lens.

Question 19:

The earth takes 24 h to rotate once about its axis. How much time does the sun take to shift by 1^o, when viewed from the earth?

Question 20:

Why does the rising sun appear bigger?

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You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.

Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.

All About Daily Practice Problems on Class 10 Science Light - Reflection and Refraction NCERT Chapter 9

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 10 Science Light - Reflection and Refraction NCERT Chapter 9 useful.

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