IF ANGLE OF INCIDENCE IS 30 DEGREE WHAT WILL BE ANGLE OF REFRACTION

while tracing a path of ray of light passing through a rectangular glass slab a student tabulated his observations as given below:

1] angle i=60`,angle r=40`angle e=61`

2] angle i=50, angle r=36, angle e=51

3] angle i=40,angle r=28 ,angle e=39

4] angle i=30,angle r=20 ,angle e=31

from the above given options which is the correct bservation?? explain briefly

if a glass rod is immersed in a liquid of the same refractive index, then it will disappear.please explain how???

While performing the experiment on tracing the path of a ray of light passing through the glass slab ....

a) angleR > angle E

b) angle R = angle E

c) angle I = angle R

d) angle I > angle R .. where R is the refeaction and I is the Incidence

 A monochromatic beam passes from denser to rarer medium as a result  

A. its velocity decreases

B. its velocity increases

C. its frequency increases

D. its frequency decreases

for tracing the path of a ray of light through a glass prism, the most appropriate distance between the two pins must be

a) 11 to 13 cm

b)7 to 10 cm

c) 3 to 5 cm

d) 2 to 4 cm

experiments on tracing the path of of a ray of light through a rectangular glass slab was performed by 4 students A B C and D. The measurement of angle i angle r and angle e are given below:

Student ( i r e)------- angles r in this sequence

A ( 30 , 19, 30) ; B (40, 26, 40) ;C (50, 37, 51) ; D(60,35,59)

The incorrect observation is by student

a) A

b) B

c) C

d) D

Pls explain this question fast.... my exam tmrw!!!

what is relation between lateral shift and thickness of the slab

After tracing the path of a ray of light passing through a rectangular glass slab for four different values of the angle of incidence, a student reported his observations in tabular form as given below:

The best observation is(A) I(B) II(C) III(D) IV

The answer given by meritnation is option (C) stating that it has the maximum angle of incidence . So lateral dispalcement will be more But in option (4) ithas greater angle of incidence....Then it should be the answer

Plz answer Fast .....tomorrow is my exam..... Please experts and friends

In an experiment to trace the path of light through a glass slab ,4 students 1,2,3,4,tabulated their observations as given below

student 1 60,55,60

student 2 60,50,62

student 3 60,40,56

student 4 59,35,60

The student who has performed the experiment with all resources and sincerity is

A) Student 1

B) Student 2

C) Student 3

D) Student 4

WHILE PERFORMING THE EXPERIMENT ON TRACING THE PATH OF A RAY OF LIGHT THROUGH A RECTANGULAR GLASS SLAB, IN WHICH OF THE FOLLOWING EXPERIMENTAL SETUPS IS A STUDENT LIKELY TO GET BEST RESULTS(SET 3 Q-38) P1 AND P2 ARE THE POSITIONS OF PINS FIXED BY HIM ( (A) I (B) II (C) III (D) IV

In the glas slab experiment shown below, four students A, B, C and D did the following:

A: kept the eyes far from the glass slab while placing both the pins P3 and P4

B: kept the eyes close to the glas slab while placing both the pins P3 and P4

C: kept the eyes close to the glass slab while placing pin P3 and and far from the slab while placing pin P4

D: kept the eyes far from the glass slab while placing pin P3 and close to the slab while placing pin P4

A student obtains a blurred image of an object on a screen by using a concave mirror. In order to obtain a sharp image on the screen, he will have to shift the mirror :

a)towards the screen

b)away from the screen

c)either towards or away from the screen depending upon the position of the object

d)to a position very far away from the screen

in an experiment to trace the path of light raythrough a triangular glass prism,the emergent ray gets what?

 difference between longitudinal and transverse waves

give the theory to trace the path of a light ray passing through a glass prism for different angles of incidence

 with the increase in thickness of glass slab the lateral displacement 

A. increases 

B.decreases

C.remains the same

D.may be A or B

In the glass slab experiment ,4 students A,B,C,D did the following .

A:kept the eyes far from the glass slab while placing both the pins P₃ AND P_4.

B:kept the eyes close to  the glass slab while placing both the pins P₃ AND P₄

C:kept the eyes close to  the glass slab while placing the pin P₃ AND far from the slab ,while placing pin P₄

D:kept the eyes far from the glass slab while placing  the pin P₃ AND close to the slab while placing pin P₄ 

which student is right?

give reason

In the glass slab experiment should we close our one eye while placing the pins on the refracted ray?

when two opposite surfaces of a slab are not parallel:

A) e=i

B) e is greater or leser depending on refractiv index

 in the precautions of our practical book its written that angle should be fixed between 30 & 50 degree for incident ray.

is it correct & to be followed as in this experiment the angle is taken upto 80 degree .

Rahim recorded the following sets of observation while tracing the path of light passing through a rectangular glass slab :

s.no angle of i angle of r angle of e

1. 45 41 45

2 . 41 45 41

which one is right?

1. how can angle of incidence is =angle of refraction

in case of reflection it is possible according to law .but reflection is not similar to refraction?

2.as it is said angle of incidence is =angle of emergence.then we can say that when angle of incidence increases then angle of emergence also increases?iam right.

For tracing the path of a ray of light through a rectangular glass slab, the range of angle of incidence should be between.

A lighted bulb is placed at the principal focus of a convex lens. The beam of light emerging from bulb is?

define snell law and applications

i)Is angle of incidence directly proportional to angle of refraction(in case of rectangular glass slab)?(As angle of incidence increases, angle of refraction increases, but the Lab Manual states the opposite in the answer key)Please explain for triangular glass prism as well.

ii)Are the angles of refraction at both refracting surfaces equal?

 if reflection and refraction are not similar then y it is said in the last line that if angle of incidence increases the angle of refraction also increases. how? 

according to the first law of reflection 

angle of incidence = angle of reflection. then from  here did refraction come. what is the relation beteen angle of refraction and angle of incidence? 

 In the last line of this video the Sir says that When the angle of incidence increases then the angle of refraction also increases

.HOw???

which of the following precautions are correct

1. while tracing the emergent ray we should see head of pins

2.one eye sholud be kept clse while tracing the e ray

3.glass slab should have parallel edges.

are all the 3 statements correct?

student i r e

A 35 30 36 The angles of incidence, refraction and emergence and tabulated by four students A B C and D.

B 45 34 46 which student has performed the experiment more carefully and methodically?

C 50 45 50 all of the obsevations are almost similar , in such cases how do we determine the correct observation ?

D 60 35 61

How to find the angle of refraction when we have the values of angle of incidence and angle of emergence??

Ohm's law to describe the characteristics of a simple resistive circuit .

Ramobtained the image of a distant object on a screen by using a
concave mirror. To find the focal length of the mirror he should
measure the distance between
(a)The mirror and the screen as well as between object and the
screen
(b)Mirror and the screen
(c)Object and the screen
(d)Object and the mirror

I know that angle of incidence is equal to angle of emergence but if u look this experiment in U - Like and solve its questions then u'll notice that in all such observation questions angle i is slightly greater than angle e. And it is confusion to answer such questions to choose correct ovservation table.

 The following are the observations of angle of incidence,angle of refraction and angle of emergence of 4 students respectively

A   30  20  25    B   30  24  30  C  30 28   22  D 30 19 30

Which student performed the expeiment carefully??????????

A teacher set up the stand carrying a convex lens of focal length 15 cm at 20.5 cm on the optical bench. She asked four students A,B,C and D to suggest the position of the screen on the optical bench so that a distinct image of a distant tree is obtained immediately on it. The positions of screen suggested by each of them were as-

A ___ at 35.5 cm

B ___ at 5.5 cm

C ___ at 50.5 cm

D ___ at 7.5 cm.

Correct position of the screen was suggested by:

(a) A (b) B (c) C (d) D 1

Plz explain on which side (the start of the scale or the end of the scale ) is the object (tree) placed. thanks!