What Distance From A Concave Mirror Of Focal Length Is 30 Cm? - Fixanswer

The images can be enlarged, diminished, and the same size as the object. (Here we take negative signs by applying a new Cartesian sign convention.) Here v is the image of an object and the image formed by the concave mirror is at 30cm in front of it. Therefore

the image is real and inverted

.

At what distance from a concave mirror of focal length 30cm should an object placed so that the size of the image is equal to the size of the object?

Thus, the screen should be placed at

30 cm

in front of the mirror so as to obtain the real image. The image formed is real, inverted and is of the same size as the object.

At what distance from a convex mirror of focal length 30 cm should an object be placed so that its image is formed 20 cm from the mirror at right side?

An object is placed at a distance of 30 cm from a convex lens of focal length 20 cm. Image distance, v = ? v=

60010=60 cm

.

Where should an object be kept for a concave mirror of focal length of 30 cm so that the image is beyond 60 cm?

Where should an object be kept for a concave mirror of focal length of 30 cm so that the image is beyond 60 cm? So object should be placed

at 40 cm to the mirror

.

At what distance from a concave mirror of focal length 10cm must an object?

So the object should be placed at a distance of

6.7 cm

from the pole of the concave mirror (on the left, in front of the mirror).

At what distance from a concave mirror of focal length 25cm should an object?

The size of the image is equal to the size of the object if the object is placed at the centre of curvature of a concave mirror. Hence, the object should be placed at

50 cm

.

Is focal length of concave mirror positive?

The focal length f of a

concave mirror is positive

, since it is a converging mirror. Figure 2. (a) Parallel rays reflected from a large spherical mirror do not all cross at a common point. (b) If a spherical mirror is small compared with its radius of curvature, parallel rays are focused to a common point.

What is the focal length of concave mirror?

Focal Length –

The distance between the pole P of the concave mirror and the focus F

is the focal length of the concave mirror. Thus, the focal length of a concave mirror can be estimated by obtaining a ‘Real image' of a distant object at its focus, as shown in the figure.

What would be the size of the image formed if the object is 2 cm high?

The size of the image formed if the object is 2 cm high is

the same as that of the size of the object

.

What are the applications of concave mirror?

Shaving mirrors.
Head mirrors.
Ophthalmoscope.
Astronomical telescopes.
Headlights.
Solar furnaces.

How many images are formed when two plane mirrors are placed at 120?

Angle between the two mirrors ( ) Number of images formed (n)	45 ° 7	60 ° 5	120 ° 2	180 ° 1

What kind of image is formed by a concave mirror?

What Kind of Image is Formed By a Concave Mirror? Ans:

Real and virtual images

are formed by concave mirrors. The images formed can be upright (if virtual) or inverted (if real). The position of the image can be behind the mirror (if virtual) or in front of the mirror (if real).

What is the position of the image when an object is placed at a distance of 30 cm from a concave mirror of focal length 30 cm?

Complete step by step answer: A concave lens is a diverging lens. Unlike converging lenses, the images formed by the concave lens are

always located on the side of the object, virtual, upright and smaller in size

than the object. So, the image is produced at 15 cm from the lens' optical centre.

Where should an object be placed in front of a concave mirror of 30 cm focal length so that the real image of double the size of the object is formed?

Answer Expert Verified. so the object must be placed

30 cm from the mirror

.

Where should an object be placed in front of a concave lens of focal length 30 cm?

Hence the object must lie on

secondary focus of the lens

.