A 35 mm wide slide with 24 mm`xx` 36 mm picture is projected ona screen placed 12 cm from the slide. The image of the slide picture on the screen measures `1.0 m xx 1.5m`. What is the linear magnification of the arrangement ?

The photograph fo a house occupies an area of 1.7cm^2 on a 35 slide. The slide is projected on to a screen, and the area of the house on the screen is 1.55m^2 What is the liner magnification of the projector screen arrangement?

An object 1 mm square is projected and its image on the screen is 1cm square. Calcullate the linear magnificaiton.

A projector lens has a focal length of 10 cm. It produces a real image of a 2cm xx 2 cm slide on a screen 5 metre from the lens. What is the size of the picture on the screen ?

A biconvex lens is used to project a slide on screen. The slide is 2 cm high and placed at 10 cm from the lens. The image is 18 cm high. What is the focal length of the lens?

In a Fresnel's biprims experiment fringes widht 0.05 mm are observed on a screen at a distance of 1.5 m from the source. When a convex lens is placed between the source and the screen, are 0.04 mm and 0.1 mm resepectively. The wavelenght of light used is s

An illuminated slide is held 68cm from a screen. How far from the slide must a lens of focal length 11cm be placed (between the slide and the screen) to form an image of the slide's picture on the screen ?

In Young's double experiment, slits are kept 0.4 mm apart from each other and the screen is placed at 2 m from the slit. The fringe width for a given monochromatic source of light is 0.8 mm. if the whole set up is kept in a medium of R.I. 1.6 , the fringe width will be

A slide projector produces 500 times enlarged image of a slide on a screen 10 m away. Assume that the projector consists of a single convex lens used for magnification. If the screen is moved 2.0 m closer, by what distance should the slide be moved towards or away from the lens so that the image remains focused on the screen ? What is the magnification in this case ?