Class 10 - Science

Light Reflection and Refraction Online MCQ Test

Olympiad Level MCQs Also Included

Set-1 Set-2 Set-3 Set-4 Set-5 Set-6 Set-7 Set-8

1. What is the speed of light in a vacuum?

(A) 300,000 km/s
(B) 299,792,458 m/s
(C) 186,000 m/s
(D) 3.00 x 10⁸ mph

2. Which colors make up white light?

(A) Red and blue
(B) Green and yellow
(C) All colors of the rainbow
(D) Black and gray

3. What is the phenomenon of bending of light as it passes from one medium to another?

(A) Refraction
(B) Reflection
(C) Dispersion
(D) Diffraction

4. What is the unit of luminous flux?

(A) Candela
(B) Watt
(C) Lux
(D) Lumen

5. What happens when light passes through a prism?

(A) It is absorbed completely
(B) It splits into different colors
(C) It turns into heat
(D) It disappears

6. What is the unit of measurement for the intensity of light?

(A) Hertz
(B) Decibel
(C) Kelvin
(D) Candela

7. Which type of mirror curves inward and can create a magnified, virtual image?

(A) Concave mirror
(B) Convex mirror
(C) Plane mirror
(D) Spherical mirror

8. Which color has the shortest wavelength in the visible spectrum?

(A) Red
(B) Blue
(C) Green
(D) Violet

9. What is the process of turning light into an electrical signal in a digital camera sensor called?

(A) Refraction
(B) Reflection
(C) Sensing
(D) Photo-electric effect

10. What is the color of an object that appears white under white light?

(A) It has no color
(B) It is black
(C) It is yellow
(D) It is red