Class 10th Science Chapter – 9 Light Reflection and Refraction
| Textbook | NCERT |
| Class | 10th |
| Subject | Science |
| Chapter | 9th |
| Chapter Name | Light Reflection and Refraction |
| Category | Class 10th Science |
| Medium | English |
| Source | Last Doubt |
| NCERT Solutions Class 10th Science Chapter – 9 Light Reflection and Refraction MCQ What is light reflection and refraction in detail, What is the difference between reflection and refraction of light, What are the 3 types of reflection of light, What are 2 laws of reflection, What is called refraction, Which is an example of refraction, What is the law of reflection, What is an example of reflection and refraction, What is mirror formula, What is the formula for reflection, What is the first law of refraction. |
Class 10th Science Chapter – 9 Light Reflection and Refraction
Chapter – 9
Light Reflection and Refraction
MCQ
| (1) Which of the following statements is true regarding reflection of light? A. The angle of incidence is always greater than the angle of reflection B. The angle of incidence is always equal to the angle of reflection C. The angle of incidence is always smaller than the angle of reflection D. The angle of incidence and angle of reflection are not related Ans – (B) The angle of incidence is always equal to the angle of reflection |
| (2) The angle of incidence for a light ray incident on a plane mirror is 30 degrees. What will be the angle of reflection? A. 30 degrees B. 60 degrees C. 90 degrees D. 120 degrees Ans – (B) 30 degrees |
| (3) The image formed by a concave mirror is: A. Always virtual, erect and diminished B. Always virtual, inverted and diminished C. Sometimes real, inverted and diminished D. Always real, inverted and magnified Ans – (C) Sometimes real, inverted and diminished |
| (4) The phenomenon responsible for the formation of a rainbow is: A. Reflection B. Refraction C. Dispersion D. Total internal reflection Ans – (C) Dispersion |
| (5) Which of the following statements is true regarding the speed of light in a vacuum? A. It is constant and independent of the wavelength of light B. It varies with the wavelength of light C. It varies with the intensity of light D. It varies with the direction of light Ans – (A) It is constant and independent of the wavelength of light |
| (6) A concave mirror is used to form an image of an object placed beyond its focus. The image formed will be: A. Real, inverted and magnified B. Real, inverted and diminished C. Virtual, erect and magnified D. Virtual, erect and diminished Ans – (B) Real, inverted and diminished |
| (7) The phenomenon of the bending of light as it passes from one medium to another is called: A. Reflection B. Refraction C. Diffraction D. Dispersion Ans – (B) Refraction |
| (8) The unit of power of a lens is: A. Dioptre B. Metre C. Watt D. Joule Ans – (A) Dioptre |
| (9) Which of the following statements is true regarding the focal length of a convex lens? a. It is always positive b. It is always negative c. It can be either positive or negative d. It is always zero Ans – (A) It is always positive |
| (10) An object is placed 20 cm in front of a concave mirror of focal length 15 cm. The image formed will be: A. Real, inverted and magnified B. Real, inverted and diminished C. Virtual, erect and magnified D. Virtual, erect and diminished Ans – (C) Virtual, erect and magnified |
| (11) The critical angle for a medium is defined as the angle of incidence at which: A. The refracted ray is parallel to the surface of the medium B. The refracted ray is perpendicular to the surface of the medium C. The angle of refraction is 90 degrees D. Total internal reflection occurs Ans – (D) Total internal reflection occurs |
| (12) A convex lens of focal length 20 cm is used to form an image of an object placed 40 cm in front of it. The nature of the image formed will be: A. Real, inverted and magnified B. Real, inverted and diminished C. Virtual, erect and magnified D. Virtual, erect and diminished Ans – (B) Real, inverted and diminished |
| (13) The colour of the sky appears blue during the day due to: A. Reflection of sunlight B. Refraction of sunlight C. Dispersion of sunlight D. Absorption of sunlight Ans – (C) Dispersion of sunlight |
| The power of a concave lens of focal length 10 cm is: A. -10 dioptre B. +10 dioptre C. -0.1 dioptre D. +0.1 dioptre Ans – (A) -10 dioptre |
| (15) An object is placed at a distance of 30 cm from a convex lens of focal length 20 cm. The image formed will be: A. Real, inverted and magnified B. Real, inverted and diminished C. Virtual, erect and magnified D. Virtual, erect and diminished Ans – (D) Virtual, erect and diminished |
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