Light Reflection and Refraction (10 Science)
Light travels in straight lines and can be reflected and refracted when it encounters different surfaces and media. Understanding reflection and refraction
TL;DR: Light travels in straight lines and can be reflected and refracted when it encounters different surfaces and media. Understanding reflection and refra…
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Light travels in straight lines and can be reflected and refracted when it encounters different surfaces and media. Understanding reflection and refraction
Light Reflection and Refraction MCQs with Answers & Explanations
Q1. What is the angle of incidence if the angle of reflection is 35 degrees?
- 35 degrees ✓ (correct)
- 45 degrees
- 55 degrees
- 70 degrees
Q2. Which of the following is true about a concave mirror when the object is at the center of curvature?
- Image is virtual and upright
- Image is real and same size ✓ (correct)
- Image is virtual and magnified
- Image is real and diminished
Q3. The focal length of a plane mirror is:
- Zero
- Infinite ✓ (correct)
- Equal to its radius of curvature
- Half its radius
Q4. When light travels from a denser to a rarer medium, it bends:
- Towards the normal
- Away from the normal ✓ (correct)
- Parallel to the normal
- At right angles to the normal
Q5. What is the power of a lens with focal length 25 cm?
- +4.0 diopters ✓ (correct)
- +2.5 diopters
- +0.4 diopters
- -4.0 diopters
Q6. A convex lens forms a real, inverted and diminished image when the object is:
- At infinity ✓ (correct)
- At the focal point
- Between focal point and center
- Beyond the center of curvature
Q7. The refractive index of a medium is always:
- Less than 1
- Equal to 1
- Greater than or equal to 1 ✓ (correct)
- Negative
Q8. Which mirror is used in a car headlight?
- Plane mirror
- Concave mirror ✓ (correct)
- Convex mirror
- Cylindrical mirror
Q9. If a convex lens of focal length 10 cm is used as a magnifying glass, where should the object be placed?
- At the focal point
- Between the focal point and the center ✓ (correct)
- At the center of curvature
- Beyond the center of curvature
Q10. The critical angle for total internal reflection depends on:
- Angle of incidence only
- The refractive indices of the two media ✓ (correct)
- The color of light only
- The wavelength of light only
Frequently Asked Questions
What is the difference between reflection and refraction?
Reflection is the bouncing back of light from a surface, while refraction is the bending of light when it passes from one medium to another.
Why do we see a rainbow after rain?
Rainbows form due to dispersion of sunlight through water droplets, where different colors of light refract at different angles.
More 10 Science MCQs
- Electricity
- Acids Bases and Salts
- Life Processes
- Carbon and its Compounds
- Metals and Non-metals
- Matter in Our Surroundings
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