Question

The image of an object viewed in a concave mirror of focal length 25.0 cm
appears 75.0 cm in front of the mirror. Find the location of the object and the
magnification

Answer 1

Answer:

So this is a concave mirror and we have given that images forming at a distance of 75 cm in front of a mirror. That means it is forming same left direction. So, image nations will be -75 because as it is forming in the left direction, we have also invented the focal length of the concave mirrors. What? 25 centimeters. And we will take it to minus 25 centimeter Because for the eastwards left now we know that as per the mirror formula one by V plus one by you is the close to one by half. So the object distance one by you would be what? one by F -1 by V. That means one divided by F is minus 25 minus plus 75. Right now if we calculate it we will get the object distance equates to approximately -35.7 70 m. Okay, that means object object displaced here which is X 37 .5 cm from the You can't give me that. Okay, now we know that magnification um for the middle is -3 by you. Now if he is -75 and the you is 37.5 -737.5. That means the magnification is -2. So what? That means the image is inverted in worker. Why? Because magnification is of negative sign. That means the image is inverted and as the magnitude of magnification Is coastal too, which is greater than one. So that image is enlarged. Image Yes enlarged. Okay, so that's the answer. Thanks