EASY
10th ICSE
IMPORTANT
Earn 100

A concave lens forms a magnified or diminished image depending on the distance of object from it.

50% studentsanswered this correctly

Important Questions on Refraction Through a Lens

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(B)>Q 1
For an object placed at distance 20 cm in front of a convex lens, the image is at distance 20 cm behind the lens. The focal length of convex lens is:
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(B)>Q 2
For the object placed between optical centre and focus of a convex lens, the image is:
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(B)>Q 3
A concave lens forms the image of an object which is:
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(C)>Q 1
Define ‘power’ of a lens. In what unit is it expressed?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(C)>Q 2
How is the power of a lens related to its focal length?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(C)>Q 3
How does the power of a lens change if its focal length is doubled ? 
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(C)>Q 4
How is the sign (+ / -) of power of a lens related to its divergent or convergent action?
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 5 - Refraction Through a Lens>EXERCISE-5(C)>Q 5
The power of a lens is negative. State whether it is convex or concave?