Question

QUESTION IS BELOW


Find the image distance for a concave lens of focal length 10 cm and the object is at 15 cm .Write the properties of the image​

Answer 1

Answer:

V = -6

Step-by-step explanation:

For concave lense focal length(f) is negative.

Now, by using mirror formula:

1/f = 1/v - 1/u

1/f + 1/u = 1/v

1/-10 + 1/-15 = 1/v

Taking l.c.m of 10 and 15 we get,

(-3) + (-2)/30 = 1/v

-5/30 = 1/v

-1/6 = 1/v

Therefore v= -6

Hence the image is virtual.