### Ray Optics and Optical Instruments

Ray Optics and Optical Instruments

These MCQs are intended for checking your Physics subject, Chapter Ray Optics and Optical Instruments knowledge.

A convergent lens will become less convergent in :

The branch of optics dealing with the formation of images using the concept of straight line propagation of light is called:

Which of-the following is not a property of light?

The angle of minimum deviation for an equilateral glass prism is 30°. Refractive index of the prism is:

A ray of light travelling in air is incident of a glass slab. The ray gets partly reflected and partly refracted. The phase difference between the reflected and the refracted waves is :

A thin glass (RI = 3/2) lens has optical power of – 5D in air. Its optical power in a liquid medium with RI = 1.6 will be:

The phase difference between the electric and the magnetic field vectors in electromagnetic waves is

If a mirror is approaching you at a speed of 10 ms-1, the speed with which your image approach you is:

On reflection from a denser medium, a light wave suffers a phase difference of:

Light year is the unit of:

Two points P and q are situated at the same distance from a source of light but on opposite sides. The plane difference between the light waves passing through P and q will be:

When light travels from one medium to another, which of the following does not change?

A beam of light is incident at 60° to a plane surface. The reflected and refracted rays are perpendicular to each other. What is the R.I. of the surface:

The refractive indices (R.I.) of glass and water with respect to air are 3/2 and 4/3 respectively. The R.I. of glass w.r. to water is:

Which of the following cannot be polarised?

Two lens of power -15 D and +5 D are placed in contact co-axially. The focal length of equivalent lens is: