EASY
10th CBSE
IMPORTANT
Earn 100

What do you understand by the term linear magnification of the lens? State two formulae for the linear magnification.

Important Questions on Light - Reflection and Refraction

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.
 
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: beyond twice the focal length of the lens.
MEDIUM
10th CBSE
IMPORTANT
Core Science Physics>Chapter 1 - Light - Reflection and Refraction>EXERCISE - 1D>Q 7
The image of a candle flame formed by a lens is obtained on a screen placed on the other side of the lens. If the image is three times the size of the flame and the distance between lens and image is 80 cm, at what distance should the candle be placed from the lens? What is the nature of the image at a distance of 80 cm and the lens?