Where an object should be placed in front of a concave mirror of focal length 20cm?
Where should an object be placed in front of a concave mirror of focal length 20 cm so as to obtain a two time magnified real image? [2011] Ans: 30 cm.
Where an object should be placed in front of concave mirror so as to get unit magnification?
centre of curvature
Where should an object be placed in front of a concave mirror of radius of curvature 40cm so that the image formed is real and its magnification is 2 times?
Answer Expert Verified so the object must be placed 30 cm from the mirror.
At what distance an object is kept from a concave mirror of focal length 20cm such away that it forms 2 times magnified image?
magnification “m”=-2times. 40+2u=-20. so if you object be placed at the distance of 30 cm then the two times magnified image will be obtain. hope it help you.
What will be the position of an image formed if an object is kept at 10 cm in front of a concave mirror of focal length 20 cm?
hence, image position is the 20cm right side from the pole of the concave mirror as shown in the diagram. The image is straight and bigger than the object.
At what distance an object is kept in front of a concave mirror of focal length 20cm so that a real image is formed at a distance of 60 cm from it?
An object of height 1.2m is placed before a concave mirror of focal length 20cm so that a real image is formed at a distance of 60cm from it. An object of height 1.2m is placed before a concave mirror of focal length 20cm so that a real image is formed at a distance of 60cm from it.
Where should the object of 1.5 cm be placed before a concave mirror for a virtual image?
Answer Expert Verified Object is always place to the left side of a mirror therefore the object distance (u) is always negative.
When a concave mirror is placed facing the sun?
When a concave mirror is placed facing the Sun, the Sun’s rays converge to a point 10 cm from the mirror. When a concave mirror is placed facing the Sun, the Sun’s rays converge to a point 10 cm from the mirror.
What happens when a concave mirror is placed in water?
Accepted Answer: The focal length of the concave mirror does not change when it is immersed in water because focal length of a mirror does not depend upon the refractive index of the medium. Therefore, when a convex lens is dipped into water, its focal length increases.
When a concave mirror is placed facing the sun the sun’s rays converge to a point 10 cm?
Answer Expert Verified Sunrays from Sun strike concave mirror and after reflection converges at a point Focus (F) on the principal axis. So, focal length =f= -10cm. ( by sign convention). U= -20cm.
When a concave mirror is placed facing the sun the sun’s rays converge to a point 10 cm in front of the mirror now if you place 2 cm object 20 cm away from the mirror what would be the position and size of the image?
Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. As sun’s rays converge to a point 10 cm from the concave mirror, therefore, focal length of mirror f=-(10)cm.
When a concave mirror is placed facing the sun rays converge to a point 15 cm from the mirror?
When a concave mirror is placed facing the sun, the sun’s rays converge to a point 10cm from the mirror. Now, an erect, 2-cm-long pin is placed 15cm away on the principal axis of the mirror.
When parallel beam of sun rays fall on a concave mirror and reflect They meet at?
3. REASONING AND SOLUTION When parallel rays of light strike a concave mirror, they are reflected; these reflected rays converge at the focal point of the mirror.
What is a convex mirror called?
A convex mirror or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source. Convex mirrors reflect light outwards, therefore they are not used to focus light. The image is smaller than the object, but gets larger as the object approaches the mirror.
Why is a convex mirror useful for starting fires?
A burning glass or burning lens is a large convex lens that can concentrate the sun’s rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface. Burning mirrors achieve a similar effect by using reflecting surfaces to focus the light.