Physics
Grade-10
Easy
Question
An object is situated at an infinite distance from a concave lens of focal length 34 cm. Its image will be formed at a distance of ___ cm from the lens.
Hint:
The correct answer is: 34
- Lens Formula is
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An object is located in front of a convex lens of focal length 40 cm at a distance of 80 cm. The image of this object will be formed at a distance of ____ cm from the lens.
An object is located in front of a convex lens of focal length 40 cm at a distance of 80 cm. The image of this object will be formed at a distance of ____ cm from the lens.
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An object is located in front of a convex lens of focal length 40 cm at a distance of 80 cm. The image will be formed ____.
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The ray diagram below shows the image formation by a convex lens. Which of the following is true about different measurements?
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The ray diagram below shows a case of the image formation by a concave lens. Here the object distance is ____, and the image distance is _____.
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The mathematical relation between the focal length, the object distance and the image distance for a lens is called _____.
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The formula below is called ______.
1/f = 1/v - 1/u
The formula below is called ______.
1/f = 1/v - 1/u
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An object is standing towards the left of a concave lens. What should be the sign of the object distance?
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The lens formula is valid for ____.
The lens formula is valid for ____.
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A convex lens is of radius of curvature 104 cm. A parallel beam of light shone on the lens converges to a point at a distance of ____ cm from the optic center.
A convex lens is of radius of curvature 104 cm. A parallel beam of light shone on the lens converges to a point at a distance of ____ cm from the optic center.
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Focal length of one side of a biconcave lens is 76 cm. Its second focal length would measure ____ cm.
Focal length of one side of a biconcave lens is 76 cm. Its second focal length would measure ____ cm.
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The focal length of a concave lens whose radius of curvature is 76 cm is ____ cm.
The focal length of a concave lens whose radius of curvature is 76 cm is ____ cm.
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The radius of curvature of a convex lens whose focal length is 25 cm is ____ cm.
The radius of curvature of a convex lens whose focal length is 25 cm is ____ cm.
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