MEDIUM
10th CBSE
IMPORTANT
Earn 100

When an object is placed in front of a concave lens of focal length 12 cm the image formed is one-fourth the size of the object. At what distance from the lens is the object placed? 

Important Questions on Light - Reflection and Refraction

MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 40
At what distance should an object be placed from a diverging lens of focal length 12 cm in order to form an image 8 cm away from the lens?
HARD
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 41
A 3.0 cm high object is placed at a distance of 12 cm from a convex lens. If the lens forms a real image of size 2 cm calculate the power of the lens.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 42
A 3 cm-long object is placed at a distance of 16 cm from a convex lens of power + 5 D. Find the focal length of the lens.
MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 42
A 3 cm-long object is placed at a distance of 16 cm from a convex lens of power + 5 D. Find the image position and nature.
HARD
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 42
A 3 cm-long object is placed at a distance of 16 cm from a convex lens of power + 5 D. Find the image size.
HARD
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 43
A concave lens of focal length 12 cm and a convex lens of focal length 24 cm are placed in contact with each other. Find the focal length and power of the combination. Does the combination act as a convex or concave lens?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 1

Explain with the help of diagrams the following:

A stick partially immersed in water appears to be bent at the water surface.

MEDIUM
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 4 - Light - Reflection and Refraction>EXERCISE>Q 1

Explain with the help of diagrams the following:

A swimming pool appears shallower than it actually is.