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  Light MCQ - Quiz Light (Quiz) 
 
MCQs  
1. The line perpendicular to the reflective surface is the __________. 
a. normal 
b. line of refraction 
c. line of incidence 
d. line of reflection 
Answer a  
 
 
2. Your image in a bathroom mirror results from __________. 
a. diffuse reflection 
b. specular refraction  
c. specular reflection 
d. diffuse refraction 
Answer c 
 
 
3. How does light normally travel? 
a. in concentric circles 
b. in a straight line 
c. always toward a dark area 
d. in a curved line 
Answer b 
 
 
4. What is f if you have an object 2.0 m from the concave mirror, and the image is 4.0 m from 
the mirror? 
a. 2.0m 
b. 0,67 m 
c. 1.3 m 
d. 4.0 m 
Answer c 
 
5. In a concave mirror, an object placed __________ will result in a virtual image. 
a. twice the distance of the focal point 
b. between the focal point and mirror 
c. between the focal point and twice the distance of the focal point 
d. past the focal point 
Answer b 
 
 
6. Which type of mirror produces an image that is always erect, always the same height as the 
object, and always virtual? 
a. convex 
b. concave 
Page 2


  Light MCQ - Quiz Light (Quiz) 
 
MCQs  
1. The line perpendicular to the reflective surface is the __________. 
a. normal 
b. line of refraction 
c. line of incidence 
d. line of reflection 
Answer a  
 
 
2. Your image in a bathroom mirror results from __________. 
a. diffuse reflection 
b. specular refraction  
c. specular reflection 
d. diffuse refraction 
Answer c 
 
 
3. How does light normally travel? 
a. in concentric circles 
b. in a straight line 
c. always toward a dark area 
d. in a curved line 
Answer b 
 
 
4. What is f if you have an object 2.0 m from the concave mirror, and the image is 4.0 m from 
the mirror? 
a. 2.0m 
b. 0,67 m 
c. 1.3 m 
d. 4.0 m 
Answer c 
 
5. In a concave mirror, an object placed __________ will result in a virtual image. 
a. twice the distance of the focal point 
b. between the focal point and mirror 
c. between the focal point and twice the distance of the focal point 
d. past the focal point 
Answer b 
 
 
6. Which type of mirror produces an image that is always erect, always the same height as the 
object, and always virtual? 
a. convex 
b. concave 
c. plane 
d. none of these 
Answer c 
 
7. __________ is located behind a convex mirror. 
a. The focal point 
b. A ray 
c. A real image 
d. The object 
Answer a 
 
8. The image from a convex mirror will _________. 
a. always be real 
b. always be projected 
c. always be virtual 
d. never be virtual 
Answer c 
 
9. Light travels fastest through which of the following materials? 
a. diamond 
b. water 
c. glass 
d. air 
Answer d 
 
 
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FAQs on Light - Reflection & Refraction : MCQ, Class 10 Science

1. What is the difference between reflection and refraction?
Ans. Reflection is the bouncing back of light rays from the surface whereas refraction is the bending of light when it passes from one medium to another. In reflection, the angle of incidence is equal to the angle of reflection while in refraction, the angle of incidence is not equal to the angle of refraction.
2. What is the formula for calculating the refractive index?
Ans. The refractive index is the ratio of the speed of light in a vacuum to the speed of light in a medium. The formula for calculating the refractive index is: n = c/v, where n is the refractive index, c is the speed of light in a vacuum and v is the speed of light in the medium.
3. How does the thickness of a convex lens affect the image formed?
Ans. The thickness of a convex lens affects the image formed by changing the focal length of the lens. A thicker convex lens will have a shorter focal length than a thinner lens. This means that the image formed by a thicker lens will be closer to the lens than the image formed by a thinner lens.
4. What is meant by the term 'total internal reflection'?
Ans. Total internal reflection occurs when light is totally reflected back into the same medium instead of being transmitted into another medium. It happens when the angle of incidence is greater than the critical angle of the medium. Total internal reflection is used in optical fibers and prism reflectors.
5. What is the difference between a concave and convex lens?
Ans. A concave lens is thinner at the center than at the edges and it diverges the light rays. A convex lens is thicker at the center than at the edges and it converges the light rays. A concave lens always forms a virtual, erect, and diminished image, while a convex lens can form a real, inverted, and magnified image under certain conditions.
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