Ray And Wave Optics Mock Tests

A concave mirror of focal length 20 cm forms a real image at a distance of 40 cm from the mirror. 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 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:

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

A compound telescope has two lenses A and B. Lens A is closer to the object than lens B. Which statement is correct?

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:

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

When a glass prism of refracting angle 60° is immersed in a liquid, its angle of minimum deviation is 30°. The critical angle of glass with respect to the liquid medium is: