Advertisements
Advertisements
प्रश्न
_______ is a combination of two convex lenses with small focal length.
पर्याय
simple microscope
compound microscope
telescope
none of these
Advertisements
उत्तर
Compound microscope is a combination of two convex lenses with small focal length.
APPEARS IN
संबंधित प्रश्न
A beam of light travelling in air is incident of water. Draw a ray-diagram indicating the change in its path in water.
A ray of light travelling in air is incident on a parallel-sided glass slab (or rectangular glass slab). Draw a ray-diagram indicating the change in its path in glass.
Describe with the help of a ray diagram the nature, size and position of the image formed when an object is placed in front of a convex lens between focus and optical centre. State three characteristics of the image formed.
What type of lens is shown in the diagram on the right? What will happen to the parallel rays of light? Show by completing the ray diagram.
A convex lens of focal length 0.10 m is used to form a magnified image of an object of height 5 mm placed at a distance of 0.08 m from the lens. Calculate the position, nature and size of the image.
A student did an experiment with a convex lens. He put an object at different distances 25 cm, 30 cm, 40 cm, 60 cm and 120 cm from the lens. In each case he measured the distance of the image from the lens. His results were 100 cm, 24 cm, 60 cm, 30 cm and 40 cm, respectively. Unfortunately his results are written in wrong order.
Which of the object distances gives the biggest image?
What kind of lens is used to correct
long-sightedness?
In figure , name the ray which represents the correct path of light while emerging out through
a glass block.
Show by a diagram the refraction of two light rays incident parallel to the principal axis on a convex lens by treating it as a combination of a glass slab and two triangular glass prisms.
A convex lens forms an image of an object equal to the size of the object. Draw a diagram to illustrate it.
In the following cases, where must an object be placed in front of a convex lens so that the image formed is of the same size as the object?
In the following cases, where must an object be placed in front of a convex lens so that the image formed is upright and enlarged?
A convex lens has a divergent action and a concave lens has a convergent action.
A convex lens forms an inverted image of size same as that of the object which is placed at a distance 60 cm in front of the lens. Find: The position of image
How will you determine the focal length of a convex lens by the plane mirror method?
Object at 2F1 of a convex lens : Image at 2F2 : : Object at F1 : _______
Write the name.
The lens used in simple microscope.
Which of the following statements is true?
- In which type of microscope do you find the lens arrangement as shown in the following diagram?
- Write about the working and the use of this microscope.
