EASY
10th ICSE
IMPORTANT
Earn 100

What is magnifying glass? Draw a ray diagram to explain the working of a magnifying glass.

Important Questions on Refraction Through a Lens

MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 6
What do you mean by angular magnification of a simple microscope?
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 7
Visual angle of any object from naked eye is 2° and from magnifying glass is 20°. What is the magnifying power of the glass? 
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 8
An object of height 5 cm is placed in front of a convex lens that forms a virtual image of the object of height 15 cm. What is the magnification of the lens?
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 9
Describe any method to find the focal length of a convex lens. Why this method cannot be used to find the focal length of a concave lens.
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 10
A convex lens of focal length 20 cm is placed on a horizontal mirror. A pin is placed above the lens such that there is no parallax between the pin and its image. What is the height of the pin from the lens?
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 11
Write any four applications of lenses.
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 12

Copy the figure and complete it to show the formation of image of the object AB. Name the lens used.

Question Image

EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 14
The focal length of a convex lens and a concave mirror both is 20 cm. What would be the change in their focal lengths if the two are immersed in water?