Reflections & Refraction - NUMERICALS
- An object of size 1.5 cm is placed at a distance of 30 cm from a concave mirror of focal length 20 cm. Find the position, size and nature of the image formed.
- An object of size 1.5 cm is placed at a distance of 30 cm from a concave mirror of focal length 20 cm. Find the position, size and nature of the image formed.
- An object of size 1cm is placed at a distance of 18 cm from a concave mirror of focal length 12 cm. Find the position, size and nature of the image formed.
- An object 3 cm high produces an image of 4.5 cm when placed at a distance of 20 cm from a concave mirror. Calculate the position size and the nature of the image formed.
- An object forms 2.5 times magnified real image when placed at a distance of 16 cm from a concave mirror. Calculate the position of image and the focal length of the mirror.
- An object 1.5 cm high placed in front of a concave mirror produces a virtual image 3 cm high. If the object is placed at a distance of 6 cm from the pole of the mirror, calculate the position of the image and the focal length of the mirror.
- A converging mirror forms three times magnified virtual image when an object is placed at a distance of 8 cm from it. Calculate the position of the image and the focal length of the mirror.
- An object 5 cm high forms a virtual image 1.25 cm high in front of a convex mirror at a distance of 24 cm. Calculate the position of the image and the focal length of the mirror
- An object forms virtual image which is 1/8th the size of the object. If the object is placed at a distance of 40 cm from the convex mirror. Calculate the position of the image and the focal length of the mirror
- An object 5 cm high is placed 20 cm in front of a concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed to obtain a sharp image. Also calculate the size of the image formed
- The radius of curvature of a convex mirror used in a moving automobile is 2 m. A truck is coming from behind at a constant distance of 3.5 m. Calculate the position and the size of the image relative to the size of the truck. What is the nature of the image
- Where should an object be placed from a converging mirror of focal length 20 cm so as to obtain an image of magnification 2
- Find the position of the object which when placed in front of a convex mirror produces a virtual image which is half the size of the object
- An object is placed 20 cm from a convex mirror and its image is formed at 12 cm from the mirror. Find the focal length of the mirror
- What is the focal length of the plane mirror? Using mirror formula prove that the image formed by a plane mirror is as far behind the mirror as the object is in front of it A convex mirror used in a bus has a radius of curvature of 3.5 m, if the driver of the bus locates a car at a distance of 10 m behind the bus, find the position size and nature of the image of the car
- A concave mirror of focal length 10 cm produces a real image on its axis 20 cm away from the mirror. Find the position of the object
- A concave mirror produces a real image of size 3 times that of the object at a distance of 30 cm from the pole of the concave mirror. Find the position of the object
- How far should an object be from the pole of a concave mirror of focal length 20 cm to form a real image 1/5th the size of the object
- A spherical mirror produces a virtual image of an object placed at 10 cm from the pole of the mirror at 30 cm from it. Find the focal length and the nature of the mirror
- An object is placed in front of a concave mirror of focal length 20 cm. The image formed is three times the size of the object, calculate the two possible distances of the object from the mirror
- When an object is placed at a distance of 60 cm from a convex mirror the magnification is ½ , where should the object be placed to get the magnification of 1/3
- An object is placed 18 cm in front of a spherical mirror. If the image is formed at 4 cm to the right of the mirror, calculate the focal length. Is the mirror concave or convex? What is the nature of image
- The focal length of concave mirror is 10 cm. Where should an object be placed in front of the mirror so that image which is half the size of object is formed
- The focal length of concave mirror is 30 cm. Where should an object be placed so that it produces i) real image ii) virtual image with magnification 2
- Find the position of the object placed in front of a concave mirror of focal length 15 cm so that it forms magnified image thrice the size of the object.
