Test-MCQ Class 10-NCERT -Science-Chapter 10-Test-2 Chapter 10: Light – Reflection and Refraction Multiple Choice Questions No of Questions : 15 Marks: 15 Please enter your email: 1. Beams of light are incident through the holes A and B and emerge out of box through the holes C – and D respectively, as Box shown in the figure. Which of the following could be inside the box? A prism A rectangular glass slab A concave lens A convex lens 2. A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in the figure. Which of the following could be inside the box? Concave lens Convex lens Rectangular glass slab Prism 3. Which of the following statement is true? A concave lens has 4D power having a focal length -0.25 m A convex lens has 4D power having a focal length 0.25 m A convex lens has 4D power having a focal length -0.25 m A concave lens has 4D power having a focal length 0.25 m 4. Magnification produced by a rear view mirror fitted in vehicles. (Exemplar) is more than one can be more than or less than one depending upon the position of the object in front of it. is less than one is equal to one 5. Rays from the Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed, so that size of its image is equal to the size of the object? (Exemplar) more than 30 cm in front of the mirror 15 cm in front of the mirror 30 cm in front of the mirror between 15 cm and 30 cm in front of the mirror 6. The path of a ray of light coming from air passing through a rectangular glass slab traced by four students shown as I, II, III and IV in the figure. Which one of them is correct? [Exemplar] Only II Only I Only III Only IV 7. You are given water, mustard oil, glycerine and kerosene. In which of these media, a ray of light incident obliquely at same angle would bend the most? [ Exemplar] Kerosene Mustard oil Water Glycerine 8. A student placed a light bulb in midway between the two plane mirrors inclined at an angle of 60°. How many images will be observed by him? 4 6 5 8 9. Where should an object be placed in front of a convex lens to get a real image of the size of the object? At infinity Between the optical centre of the lens and its principal focus At twice the focal length At the principal focus of the lens 10. Which of the following lenses would you prefer to use while reading small letters found in dictionary? A convex lens of focal length 50 cm A concave lens of focal length 5 cm A convex lens of focal length 5 cm A concave lens of focal length 50 cm 11. Which of the following ray diagrams is correct for the ray of light incident on a lens shown in Fig ? Fig A Fig B Fig D Fig C 12. A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top. Convex, concave and plane Concave, plane and convex Plane, convex and concave Convex, plane and concave 13. In which of the following, the image of an object placed at infinity will be highly diminished and point sized? Convex lens only Concave mirror only Convex mirror only Concave mirror, convex mirror, concave lens and convex lens 14. The line perpendicular to the reflective surface is the line of incidence normal line of refraction line of reflection 15. The property of a mirror used in burning a paper is Rays from an object placed between F and 2F in a concave mirror after reflection forms the image beyond the Focus Rays from an object placed at Focus after reflection in a concave mirror forms the image at a very large distance. Rays from an object placed at a large distance in a convex mirror after reflection forms the image at the Focus Rays from an object placed at a large distance in a concave mirror after reflection forms the image at the Focus Please Enter Your Name, School Name & Class in the given below box and submit: ( results will be shown after submit within few moments on same page ) Loading … Question 1 of 16
