Question 1
Light – Reflection and Refraction · 2024
Where is the image of a real object formed by a convex mirror?
Correct!
The answer is A, Behind the mirror.
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Light – Reflection and Refraction questions for CBSE X
Lakshyank has 55 Light – Reflection and Refraction questions for CBSE X. Try a few below, then practise the rest free.
Question 2
Light – Reflection and Refraction · 2024
Where should a real object be placed to obtain a virtual image using a convex lens?
Correct!
The answer is C, Between the optical centre and the principal focus.
Question 3
Light – Reflection and Refraction · 2024
A mirror forms a real image on a screen 60 cm in front,from an object 30 cm in front. Object height=2.4 cm. Identify mirror type,focal-length magnitude,and image height and orientation.
Correct!
The answer is D, Concave; 20 cm; 4.8 cm inverted.
Question 4
Light – Reflection and Refraction
A convex lens gives a real image with magnification −1 of an object 20 cm from it. Find its power.
Correct!
The answer is B, +10 D.
Question 5
Light – Reflection and Refraction
State the two laws of refraction for given media and colour of light.
Correct!
The answer is B, Incident ray,refracted ray and normal are coplanar;sin i/sin r is constant.
Question 6
Light – Reflection and Refraction
After the convex lens is moved farther from the book, enlarged inverted words become visible. Which object position produces this?
Correct!
The answer is B, Between F and 2F.
Question 7
Light – Reflection and Refraction
What is the linear magnification of a plane mirror image, and why?
Correct!
The answer is B, +1, because the image is erect and equal in size to the object.
Question 8
Light – Reflection and Refraction
Define the absolute refractive index n of a medium.
Correct!
The answer is B, n=c/v,where c is light speed in vacuum and v in the medium.
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