EASY
10th Maharashtra Board
IMPORTANT
Earn 100

Distinguish between:

Concave lens and Convex Lens

Important Questions on Lenses

EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 7 - Lenses>Exercise>Q 7
What is the function of iris and the muscles connected to the lens in human eye?
EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 7 - Lenses>Exercise>Q 8
The doctor has prescribed a lens having power +1.5 D. What will be the focal length of the lens? What is the type of the lens and what must be the defect of vision?
MEDIUM
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 7 - Lenses>Exercise>Q 8
5 cm high object is placed at a distance of 25 cm from a converging lens of focal length of 10 cm. Determine the position, size and type of the image.
EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 7 - Lenses>Exercise>Q 8
Three lenses having power 2, 2.5 and 1.7 D are kept touching in a row. What is the total power of the lens combination?
EASY
10th Maharashtra Board
IMPORTANT
Science and Technology Standard Ten Part - 1>Chapter 7 - Lenses>Exercise>Q 8
An object kept 60 cm from a lens gives a virtual image 20 cm in front of the lens. What is the focal length of the lens? Is it a converging lens or diverging lens?