a point object is moving on the principal axis of a concave mirror of focal length 24 cm towards the mirror. When it is at a distance of 60 cm from the mirror, its velocity is 9 cm/sec. What is the velocity of the image at that instant (1) 5 cm/sec (2) 12 cm/sec (3) 4 cm/sec (4) 9 cm/sec

Open in App

Solution

Suggest Corrections

Similar questions

Q. A point object is moving on a principle axis of a concave mirror of focal length

24 c m

towards the mirror. When it is at a distance of

60 c m

from the mirror, its velocity is

9 c m / s e c

. What is the velocity of the image at that instant?

Q. A luminous point object is moving along the principal axis of a concave mirror of focal length 12 cm towards it. When its distance from mirror is 20 cm its velocity is 4 cm/s. The velocity of the image in cm/s at that instant is :

Q. A particle moves towards a concave mirror of focal length

30 c m

along its axis and with a constant speed of

4 c m / s e c

. What is the speed of its image when the partical is at

90 c m

from the mirror?

Q. An object is moving towards a stationary concave mirror of focal length

24 cm

. When it is at a distance of

60 cm

from the mirror, its speed is

9 cm/s

. The velocity of its image at this instant will be

If object is placed at 60 cm before the concave mirror. The object moves with velocity 20 cm/sec towards the mirror. The magnification is -1/2 at initial position. And if magnification after 1 sec is – 1 find out the average velocity of the image for above 1 sec period.

Join BYJU'S Learning Program