A car is fitted with a convex side-view mirror of focal length 20cm.

Convex mirrors give a virtual, erect, and diminished image of the objects placed in front of them. They are preferred as a rear-view mirror in vehicles because they give a...

Convex mirrors are used as rear-view mirrors in vehicles to see the traffic at the rear side. Convex mirrors are preferred because (i) they always give an erect, though diminished image. (ii)...

By observing the virtual images formed by the three mirrors, we can distinguish between the mirrors as: (i) Plane mirror will produce an image of the same size, (ii) Concave mirror will...

(b) concave mirror or convex lens.

(b) concave mirror or convex lens.

(c) both concave mirror and convex lens.

(ii) 2 m/s Explanation: As the car moves 2 m backward, the mirror also moves 2 m backward, so image comes 2 m forward.

Focal length f = 20 cm Object distance u = -15 cm Image distance v= ? The lens formula is 1/f = 1/v - 1/u 1/v = 1/u + 1/f 1/v = 1/-15 + 1/20 1/v...

(d) Focal length of the spherical mirror does not depend on the medium in which it placed.

(d) Air bubble in water would act as a diverging lens, because the index of refraction of air is less than that of water.