Ray And Wave Optics Mock Tests

A convex lens of focal length 20 cm produces a real image of magnification 2 when the object is placed at a distance of:

In a Young's double slit experiment, the fringe width is 0.8 mm. If the entire apparatus is immersed in water (μ = 4/3), the new fringe width is:

In Young's double slit experiment, the fringe width β is given by:

In Young double slit experiment, the fringe width is 0.5 mm. If the distance between the slits is halved and the distance between the screen and slits is doubled, the new fringe width will be:

A ray of light passes from glass (μ = 1.5) to air. The critical angle is:

A convex lens of focal length 20 cm produces a real image of magnification 2. The object distance is:

A convex lens of focal length 15 cm forms a real image at a distance of 30 cm from the lens. The object distance is:

In Young's double slit experiment, the fringe width is 0.5 mm. If the distance between the slits and the screen is doubled and the slit separation is halved, the new fringe width will be: