Class 10 · ICSE · Physics

Refraction through a Lens

Converging and diverging lenses, image formation, the lens formula and magnification.

Questions: 13
PYQs: 0
Topics: 2

Syllabus mapping: ICSE syllabus (CISCE)

All questions Practise this chapter

Topics in this chapter

Narrow to a single topic to practise one idea at a time.

Image Formation by Lenses1 Lens Formula and Magnification1

Questions

13 questions in this chapter.

Answer available
Class 10 · Physics · Refraction through a Lens
State two differences between the image formed by a converging lens and that formed by a diverging lens for a real object.
3 marksMediumShort answer
Answer available
Class 10 · Physics · Refraction through a Lens
An object 3 cm tall is placed 15 cm from a converging lens of focal length 10 cm. Find the position, size and nature of the image.
4 marksHardNumerical
Answer available
Class 10 · Physics · Refraction through a Lens
Find the power of a converging lens of focal length 25 cm.
3 marksMediumNumerical
Answer available
Class 10 · Physics · Refraction through a Lens
A diverging lens has a focal length of 20 cm. Find its power.
3 marksMediumNumerical
Answer available
Class 10 · Physics · Refraction through a Lens
A person cannot see distant objects clearly. Name the defect, the lens used to correct it, and explain why that lens works.
3 marksMediumApplication based
Answer available
Class 10 · Physics · Refraction through a Lens
The power of a lens of focal length 50 cm is:
1 markEasyMCQ
Answer available
Class 10 · Physics · Refraction through a Lens
A converging lens forms a virtual image only when the object is placed:
1 markMediumMCQ
Answer available
Class 10 · Physics · Refraction through a Lens
Draw a ray diagram to show the image formed by a converging lens when the object is placed between the focus and twice the focal length.
3 marksMediumDiagram based
Answer available
Class 10 · Physics · Refraction through a Lens
Short-sightedness is corrected by using a:
1 markMediumMCQ
Answer available
Class 10 · Physics · Refraction through a Lens
Where must an object be placed in front of a converging lens for the image to be virtual, erect and magnified? Name one use of this arrangement.
3 marksMediumShort answer
Answer available
Class 10 · Physics · Refraction through a Lens
An object is placed 20 cm from a converging lens of focal length 15 cm. Find the position, nature and magnification of the image.
3 marksMediumNumerical
Answer available
Class 10 · Physics · Refraction through a Lens
State two differences between a real image and a virtual image.
2 marksEasyShort answer

See all 13 questions