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प्रश्न
A student has obtained a magnified image of a flame on a screen using a convex lens. To draw the corresponding ray diagram to show the image formation, which of the following two rays whose paths after refraction are shown, should he select ?
(A) I and II
(B) II and III
(C) III and IV
(D) I and III
उत्तर
A convex lens converges the refracting ray. Therefore, rays I and III represent the path of the refracting ray from a convex lens(converging lens). As rays II and IV show the refracting ray being diverged, the ray diagrams are incorrect.
Hence, the correct option is D.
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संबंधित प्रश्न
An object is placed at a distance of 15 cm from a convex lens of focal length 20 cm. List four characteristics (nature, position, etc.) of the image formed by the lens.
Draw a labelled ray diagram to show the angle of incidence and the angle of refraction for a refracted ray of light.
What kind of lens can form:
an inverted diminished image?
What kind of lens can form:
am erect diminished image?
The focal length of a thin convex lens is ______ than that of a thick convex lens.
A lens forms an inverted image of an object. Name the kind of lens.
A teacher sets up the stand carrying a convex lens of focal length 15 cm at 42.7 cm mark on the optical bench. He asks four students A, B, C and D to suggest the position of screen on the optical bench so that a distinct image of a distant tree is obtained almost immediately on it. The positions suggested by the students were as
A. 12.7 cm
B. 29.7 cm
C. 57.7 cm
D. 72.7 cm
The correct position of the screen was suggested by
(a) A
(b) B
(c) C
(d) D
Distinguish between:
Concave lens and Convex lens
_______ is a combination of two convex lenses with small focal length.
Distinguish between:
Concave lens and Convex lens
