Physics
Draw ray diagrams showing the image formation by a convex lens when an object is placed
(a) between optical centre and focus of the lens.
(b) between focus and twice the focal length of the lens.
(c) at twice the focal length of the lens.
(d) at infinity.
Related Questions
A ray of light PQ falls normally on the hypotenuse of a right angled prism ABC as shown below
(a) Copy the diagram and complete the path of ray PQ till it emerges from the prism.
(b) What is the value of the angle of deviation of the ray?
(c) Name an instrument where this action of prism is used.
A linear object is placed on the axis of a lens. An image is formed by refraction in the lens. For all positions of the object on the axis of the lens, the positions of the image are always between the lens and the object.
(a) Name the lens.
(b) Draw a ray diagram to show the formation of the image of an object placed infront of the lens at any position of your choice except infinity.
(a) A force applied on a
I. rigid body
II. non-rigid body
How does the effect of force differ in the two cases?
(b) Give one example of couple force.
(a) In a single movable pulley, if the weight of the load is L and the weight of the movable pulley is w, find out the expression for its mechanical advantage.
(b) Which simple machine is used by labourers to load heavy barrels on a truck?
(c) Does a single fixed pulley help us to multiple force? In what way is it useful?