Which of the following statements is INCORRECT based on our Ray Model of Light? Select one or more:
a. Light moves in a circular motion and diffracts when it encounters an obstacle, which is why shadows exist.
b. The ray of light approaching a mirror is the incident ray, and the ray of light that leaves a mirror is the reflected ray.
c. In order to view an object, light rays from that object must enter your eye.
d. The distance from all plane mirrors to any object is equal to the distance from the mirror to the image.

a and c

Explanation:

a)light moves in a straight line and distracts when it encounters an obstacle forming a shadow

c)the light rays from that object or also tgose from the image must enter your eye for you to see that image

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards