Moving Objects
Trending Questions
Q. When an object is kept at a distance of 30 cm from a concave mirror, the image is formed at a distance of 10 cm. If the object is moved with a speed of 9 cms−1 in horizontal direction, the speed with which the image moves is
- 0.1 cm/s
- 1 cm/s
- 3 cm/s
- 9 cm/s
Q. A particle revolves in clockwise direction (as seen from point A) in a circle C of radius 1 cm and completes one revolution in 2 s. The axis of the circle and the principal axis of the mirror M coincide. The radius of curvature of the mirror is 20 cm. Then, the direction of revolution (as seen from A) of the image of the particle and its speed is
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/616961/original_8.png)
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/616961/original_8.png)
- Clockwise, 1.57 cm/s
- Clockwise, 3.14 cm/s
- Anticlockwise, 1.57 cm/s
- Anticlockwise, 3.14 cm/s