Show that the mirror formula for spherical mirrors also holds for a pl

1.	Show that the mirror formula for spherical mirrors also holds for a plane mirro
Answer» For plane mirror the usual mirror formula can be used usual mirror formula involves object distance u image distance v and f -the focal length which is equal to R/2 where R is the radius of curvature. the form of equation is 1/u + 1/v = 1/f = 2/R the question is what is radius of curvature of a plane mirror? if one takes the radius of curvature R to be very large compared to u and v then the curved surfaces will be planes. so if R is infinitely large then 2/R goes to zero. so the plane mirror formula reduces to 1/u + 1/v = 0 means u = -v so if object is placed in front of mirror , the image will be located behind the mirror. however as the formula is trivial so its not used. but when several media gets coupled to plane mirror this concept is used . jdur don't don't drive to that conclusion and the dots all India to is to is smaller

Show that the mirror formula for spherical mirrors also holds for a plane mirro

Answer»

For plane mirror the usual mirror formula can be used

usual mirror formula involves object distance u

image distance v and

f -the focal length

which is equal to R/2 where R is the radius of curvature.

the form of equation is

1/u + 1/v = 1/f = 2/R

the question is what is radius of curvature of a plane mirror?

if one takes the radius of curvature R to be very large compared to u and v then the curved surfaces will be planes.

so if R is infinitely large then 2/R goes to zero.

so the plane mirror formula reduces to

1/u + 1/v = 0 means u = -v

so if object is placed in front of mirror , the image will be located behind the mirror.

however as the formula is trivial so its not used. but when several media gets coupled to plane mirror this concept is used .

jdur don't don't drive to that conclusion and the dots all India to is to is smaller

Discussion

No Comment Found

Related InterviewSolutions

7. A body has a weight 50 N in air. Afterimmersing completely in liquid its weight is20 N. Then, the buoyant force on the bodywill be
Name the particulate which causes the disease mentioned below:(a)minamata (b)silicosis.
- Where does a body weight more at the surface of the carth or in a mine?
DelyAbody79entire chainthe ch.57. A body of mass 50gm collides elastically with anotherbody of mass 30 gm at rest. Then the percentage lossof the velocity of the colliding body during collision is1) 25% 2) 75% 3) 50% 4) 67%3) 120380.beide
What will be the acceleration of a body of mass5 kg if a force of 200 N is applied on it?
Rig. 5.168.13 Two bodles of masses 10 kg and 20 kg respectively kept on a smooth, hortzontalsurface are tied to the ends of a light string a horizontal force F 600 Nsapplied to lu A (t) B along the direction of string. What is the tension in thestring in each case
culate the gravitational force befween two protons kept at a distance67 x 10-27 kg. (1 femtometre = 10-15 m)
15. A uniform chain of length 2 m is kept on atable such that a length of 60 cm hangs freelyfrom the edge of the table. The total mass ofthe chain is 4 kg. What is the work done inpulling the entire chain onto the table ?(g = 10 m/s)1) 7.2J273.63) 120J4) 1200
Two block of mass 3 kg and 6 kg respectively are placed on a smooth 1.0 m/shorizontal surface. They are connected by a light spring of force 3 kgconstant k 200 N/m. Initially the spring is unstretched. The indicatedzmvelocities are imparted to the blocks. The maximum extension of thespring will be:A30 cm(C) 20 cm2.0 mls(B) 25 cm(D) 15 cm
88. A piece of stone is thrown vertically upwards. It reaches the maximum height in 3 seconds. If the accelerationof the stone be 9.8 m/s directed towards the ground, calculate the initial velocity of the stone with which itis thrown upwards.