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
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13 questions
- 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
- Answer available
Class 10 · Physics · Refraction through a Lens
An object is placed 30 cm from a converging lens of focal length 10 cm. Find the position of the image and state its nature.
3 marksMediumNumerical