Optics Answers

9. The number of images formed by two plane mirrors placed at angle 90 degree is
a.four
b.three
c.two
d.one

10.The number of images formed by two plane mirrors placed at angle 180 degree is
a.two
b.one
c.three
d.four

1.Find the position of image formed in question 9.
a.24cm in front of mirror
b.12cm in front of mirror
c.24cm behind the mirror
d.10cm in front of mirror

2. Angle of incidence equals angle of reflection is applicable to ___ mirror.
a.connvex
b.concave
c.curved
d.plane

3.The number of images formed by two plane mirrors placed at angle 30 degree is
a.11
b.10
c.9
d.8

4.When a ray of light passes through the prism, the sum of the angle of the prism and the angle of deviation is equal to the sum of the angle of incidence and the angle of ---------
a.incidence
b.reclection
c.deviation
d.emergence

Explain light transmission through optical fibres.

Two lenses of power 3d and -5d are placed in contact to form a composite lens. An object is placed at a distance 50cm from this composite lense. find the position of image

The electrical breakdown in air occurs at electric field strength of 3.5MV m−1. Calculate the corresponding intensity of a plane wave

If h is plankcs's constant,the momentum of a photon of wavelength 1anstrom in?

The electrical breakdown in air occurs at electric field strength of 3.5MV m−1
.
Calculate the corresponding intensity of a plane wave.

How is this solve plz help me.

Obtain the conditions for observing maxima and minima in a Young two-slit
interference pattern. Show that these conditions change when a thin transparent
sheet of thickness t and refractive index μ is introduced in the path of one of the
superposing beams.

A double slit interference pattern is produced by a parallel beam of light passing
through two slits of unequal widths 20 λ and 40 λ, respectively, where λ is the
wavelength of the light used. The distance between the centres of the slits is
1,000 λ. If the fringes are observed on a screen far off from the slits (D >> 1,000 λ),
calculate the separation of two adjacent maxima.

A point object is situated at a distance of 36 CM from the center of the sphere of radius 12cm and refractive index 1.5 .locate the position of the image due to refraction through sphere.