Advertisements
Advertisements
प्रश्न
Out of the two lenses one concave and the other convex state which is a convergent or a divergent type of a lens. Give a reason for your answer.
उत्तर
The convex lens is a convergent type of a lens since it converges the light rays to a point while the concave lens is a divergent type of lens since it spreads the light rays.
APPEARS IN
संबंधित प्रश्न
What kind of lens can form:
am erect diminished image?
What would be the diameter of the image of the flower on the film?
A convex lens is placed in water. Its focal length will ______.
A lens forms an inverted image of an object. Name the kind of lens.
If you are to determine to focal length of a convex lens, you should have
(A) a convex lens and a screen
(B) a convex lens and a lens holder
(C) a lens holder, a screen holder and a scale
(D) a convex lens, a screen, holder for them and a scale
i. Which type of microscope has the arrangement of lenses shown in the adjoining figure?
ii. Label the figure correctly.
iii. Write the working of this microscope.
iv. Where does this microscope used?
v. Suggest a way to increase the efficiency of this microscope.
State the nature and position of the object on the principal axis to obtain a virtual and magnified image.
Can a normal convex lens behave like a concave lens and vice-versa?
A candle is placed between f and 2f a convex lens. Draw a ray diagram showing the position of the image.
Observe the given figure and answer the following questions.
- Where is the above type of lens construction used?
- What type of image is formed by an objective lens?
- What happens instead of placing at Fo if the object is placed in between O and Fo?
