RAY OPTICS AND OPTICAL INSTRUMENTS

What cause chromatic aberration?

Two plane mirrors inclined to each other at an angle what is the number of image formed?

In an optics experiments, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. A graph between the object distance and the image distance from the lens, is plotted using the same scale for the two axes. A straight line passing through the origin and making an angle of with the -axis meets the experimental curve at The coordinates of will be

A bi-convex lens made of glass (refractive index 1.5) is put in a liquid of refractive index 1.7. Its focal length will

A person cannot see properly beyond 2 m. Power of the lens is

A thin glass (refractive index 1.5) lens has optical power of -5 D in air. Its optical power in a liquid medium with refractive index 1.6 will be

A compound microscope has an objective and eye-piece as thin lenses of focal lengths 1 cm and 5 cm respectively. The distance between the objective and the eye-piece is 20 cm. The distance at which the object must be placed infront of the objective if the final image is located at 25 cm from the eye-piece, it numerically

From which source a continuous emission spectrum and a line absorption spectrum are simultaneously obtained

In a thin prism of glass (refractive index 1.5), which of the following relations between the angle of minimum deviations and angle of refraction will be correct

What is the time taken (in ) to cross a glass of thickness and by light