HARD
10th CBSE
IMPORTANT
Earn 100

The refractive index of a medium X with respect to medium Y is 2/3 and the refractive index of medium Y with respect to medium Z is 4/3. Find the refractive index of medium Z with respect to medium X.

Important Questions on Light - Reflection and Refraction

EASY
10th CBSE
IMPORTANT
Xamidea COMPLETE COURSE SCIENCE Class X>Chapter 10 - Light - Reflection and Refraction>SELF-ASSESSMENT TEST>Q 7
Which property of concave mirror is utilised for using them as shaving mirrors?
MEDIUM
10th CBSE
IMPORTANT
Xamidea COMPLETE COURSE SCIENCE Class X>Chapter 10 - Light - Reflection and Refraction>SELF-ASSESSMENT TEST>Q 7
The power of a lens is +5 dioptres. What is the nature and focal length of this lens? At what distance from this lens should an object be placed so as to get its inverted image of the same size?
MEDIUM
10th CBSE
IMPORTANT
Xamidea COMPLETE COURSE SCIENCE Class X>Chapter 10 - Light - Reflection and Refraction>SELF-ASSESSMENT TEST>Q 8
If the image formed by a lens for all positions of the object placed in front of it is always virtual, erect and diminished, state the type of the lens. Draw a ray diagram in support of your answer. If the numerical value of focal length of such a lens is 20 cm, find its power in new Cartesian sign conventions.
HARD
10th CBSE
IMPORTANT
Xamidea COMPLETE COURSE SCIENCE Class X>Chapter 10 - Light - Reflection and Refraction>SELF-ASSESSMENT TEST>Q 9
Find the position of an object which when placed in front of a concave mirror of focal length 20 cm produces a virtual image twice the size of the object.
HARD
10th CBSE
IMPORTANT
Xamidea COMPLETE COURSE SCIENCE Class X>Chapter 10 - Light - Reflection and Refraction>SELF-ASSESSMENT TEST>Q 10
You have two lenses A and B of focal lengths +10 cm  and  -10 cm respectively. State the nature and power of each lens. Which of the two lenses will form a virtual and magnified image of an object placed 8 cm from the lens? Draw a ray diagram to justify your answer.
MEDIUM
10th CBSE
IMPORTANT
Xamidea COMPLETE COURSE SCIENCE Class X>Chapter 10 - Light - Reflection and Refraction>SELF-ASSESSMENT TEST>Q 11

Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed in front of a convex lens at F.

MEDIUM
10th CBSE
IMPORTANT
Xamidea COMPLETE COURSE SCIENCE Class X>Chapter 10 - Light - Reflection and Refraction>SELF-ASSESSMENT TEST>Q 11
Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed at 2F of a convex lens
MEDIUM
10th CBSE
IMPORTANT
Xamidea COMPLETE COURSE SCIENCE Class X>Chapter 10 - Light - Reflection and Refraction>SELF-ASSESSMENT TEST>Q 11
Draw the ray diagram in each case to show the position and nature of the image formed when the object is placed between the lens and infinity of a concave lens.