Moving Objects

Q. Find the velocity of images formed due to a point object $O$ w.r.t. ground if the mirror is at rest. All speeds given are w.r.t a stationary ground observer

1. $25\text{m/s}\text{towards mirror}$
2. $45\text{m/s}\text{towards mirror}$
3. $25\text{m/s}\text{away from mirror}$
4. $45\text{m/s}\text{away from mirror}$

Q. A real object is placed in front of a convex mirror (fixed). The object is moving towards the mirror. If $V_0$ is the speed of the object and $V_i$ be speed of image, then

1. $V_i<V_0$ always
   
2. $V_i>V_0$ always
   
3. $V_i>V_0$, initially and then $V_0>V_I$
   
4. $V_i<V_0$, initially and then $V_i>V_0$

Q. A real object is placed in front of a convex mirror (fixed). The object is moving towards the mirror. If $V_0$ is the speed of the object and $V_i$ be speed of image, then

1. $V_i<V_0$ always
   
2. $V_i>V_0$ always
   
3. $V_i>V_0$, initially and then $V_0>V_I$
   
4. $V_i<V_0$, initially and then $V_i>V_0$

Q. Find the velocity of images formed due to a point object $O$ w.r.t. ground if the mirror is at rest. All speeds given are w.r.t a stationary ground observer

1. $25\text{m/s}\text{towards mirror}$
2. $45\text{m/s}\text{towards mirror}$
3. $25\text{m/s}\text{away from mirror}$
4. $45\text{m/s}\text{away from mirror}$

Q. A particle revolves in clockwise direction (as seen from point A) in a circle C of radius $1\text{cm}$ and completes one revolution in $2s$. The axis of the circle and the principal axis of the mirror $M$ coincide. The radius of curvature of the mirror is $20\text{cm}$. Then, the direction of revolution (as seen from A) of the image of the particle and its speed is

1. Clockwise, $1.57\text{cm/s}$
2. Clockwise, $3.14\text{cm/s}$
3. Anticlockwise, $1.57\text{cm/s}$
4. Anticlockwise, $3.14\text{cm/s}$