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- How Do Organism Reproduce
- Heredity and Evolution
- Light: Reflection and Refraction
- Human Eye and Colorful World
- Electricity
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Popular Questions
- (i) The refractive index of kerosene is 1.44," (ii) A ray of light strikes a glass slab at an angle of incidence equal to 30°.
- Observe the following incomplete ray diagram of an object where the image A B is formed after refraction from a convex lens.
- The radius of curvature of concave mirror is 12cm. Then, the focal length will be
- Arrange air, glass and water in terms of descending order of refractive index.
- The refractive index of diamond is 2.42 and that of glass is 1.52.
- Assertion : Higher is the refractive index of a medium or denser the medium Reason : Refractive index is inversely proportional to..
- When an object is placed at a distance of 60cm from a convex spherical mirror, the magnification produced is 1/2.
- A spherical mirror produces an image of magnification -1 on a screen placed at a distance of 50 cm from the mirror.
- A concave mirror of focal length f can form a magnified, erect as well as an inverted image of an object place in front of it.
- An object is placed at 2 F1 in front of a convex lens. What is the
- If the magnification of a body of size 1 m is 2. What is the size of the image?
- (i) An object 1 cm high produces a real image 1.5cm high when placed at a distance of 15cm from a concave mirror. (ii) Write two u..
- Draw a labelled diagram showing how an image of a small size can be projected on large screen
- A convex lens made of a material of refractive index n2 is kept in a medium of refractive index n1.
- The magnification produced by a spherical mirror is -3.
- The absolute refractive indices of glass and water are 4/3 and 3/2,
- (i) Draw a ray diagram to show the refraction of light (ii) If the refractive index of glass for light going from air to glass is..
- A student wants to project the image of a candle flame on a screen 48 cm in front of a mirror by keeping the flame at a distance o..
- Write the relationship of object distance (u), image distance (v) and focal length (f).
- A ray of light is refracted as shown in figure.
- When light of two colours A and B is passed through a plane boundary; A is bent more than B.
- If p,q and r denote the object displace, image distance and the radius of curvature respectively,
- A light ray enters from medium A to medium B as shown in the figure.
- A ray of light is incident on a concave mirror after passing through the centre of curvature. What is the angle of incidence?
- You are given water, mustard oil, glycerine and kerosene.
- (i) In refraction of light through a rectangular glass slab (ii) What happens when a light ray is incident normally
- An object of height 8 cm is placed at a distance of 40cm infront of a convex lens of focal length 20cm. The size of image is
- Due to which property of light, sharp shadows of opaque objects are obtained?
- What is minimum distance between an object and its real image formed by a convex lens?
- Figure shows a ray of light as it travels from medium A to medium B.
- If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of..
- When a plane mirror is placed horizontally on levelled ground at a distance of 40 m from the foot of a tower, the top of the water..
- The path of a ray of light coming from air passing through a rectangular glass slab traced by four students shown as A, B, C and d..
- Define 1 D of power of lens.
- Find out from table given below, the medium having highest optical density.
- A concave lens made of a material of refractive index
- Beams of light are incident through the holes A and B and emerge out of box through the holes c and d respectively as shown in the..
- A ray is incident on a plane mirror as shown in figure.
- The refractive index of diamond is 2.42.
- find the power of concave lens of focal length 2m.
