EASY
10th CBSE
IMPORTANT
Earn 100

State whether u, v and f are positive or negative, when: the lens is convex and the image formed is virtual.
 

Important Questions on Light - Reflection and Refraction

EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 2
State whether u, v and f are positive or negative, when: the lens is concave.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 3
What do you understand by the term linear magnification of the lens? State two formulae for the linear magnification.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 4
What do you understand by the term power of a lens?
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 4
State and define the unit of the power of a lens.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 4
When is the power of the lens (a) positive, (b) negative?
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 5
Draw a neat diagram to illustrate the use of convex lens as magnifying glass.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 6
Draw ray diagrams showing the image formation by a concave lens when an object is placed: at the focus of the lens.
EASY
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 6
Draw ray diagrams showing the image formation by a concave lens when an object is placed: between focus and twice the focal length of the lens.