EASY
10th CBSE
IMPORTANT
Earn 100

Identify the device used as a spherical mirror or lens in the following cases, when the image formed is virtual and erect in each case.

Object is placed between infinity and device, image formed is diminished and between pole and focus, behind it.

Important Questions on Light - Reflection and Refraction

MEDIUM
10th CBSE
IMPORTANT
Draw ray diagram to show the formation of images when an object is placed in front of a concave mirror between the pole and focus point.
MEDIUM
10th CBSE
IMPORTANT
Draw ray diagram to show the formation of images when an object is placed in front of a concave mirror between the centre of curvature and focus point.
MEDIUM
10th CBSE
IMPORTANT

An object is placed at a distance of 24 cm from the optical centre of a convex lens of focal length 18 cm. Find the distance of the image from the lens. What will be the height of the image if the object is 3.0 cm tall?

MEDIUM
10th CBSE
IMPORTANT
How far should an object be placed from a convex lens of focal length 20 cm to obtain its image at a distance of 30 cm from the lens? What will be the height of the image if the object is 6 cm tall? 
MEDIUM
10th CBSE
IMPORTANT
Describe a simple method for the estimation of focal length of a concave mirror.
EASY
10th CBSE
IMPORTANT
An object placed in front of a concave mirror forms a diminished image which is not reduced to a point. What is the position of the object?
EASY
10th CBSE
IMPORTANT
An object placed in front of a concave mirror forms a diminished image which is not reduced to a point. What is the position of image?
 
EASY
10th CBSE
IMPORTANT
An object placed in front of a concave mirror forms a diminished image which is not reduced to a point. Draw a ray diagram in support of your answer.