#8 | Problems
(Physics) > Ray Optics and Optical Instruments
Unable to watch the video, please try another server
Related Practice Questions :

Absolute refractive indices of glass and water are 3/2 and 4/3. The ratio of velocity of light in glass and water will be

1.  4:3

2.  8:7

3.  8:9

4.  3:4

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


When a ray is refracted from one medium to another, the wavelength changes from 6000A0 to 4000A0. The critical  angle for the interface will be:

1.  cos-1 23  

2.  sin-123 

3.  sin-123 

4.  cos-123

 

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


One face of a rectangular glass plate 6 cm thick is silvered. An object held 8 cm in front of the first face, forms an image 10 cm behind the silvered face. The refractive index of the glass is [Consider that light ray returns back in the first medium]

(a) 0.4                     (b) 0.8

(c) 1.5                     (d) 1.6

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


One side of a glass slab is silvered as shown. A ray of light is incident on the other side at angle of incidence of 450. The Refractive index of glass is given as 1.5. The deviation of the ray of light from its initial path when it comes out of the slab is:

(a)   90o

(b)   180o

(c)   120o

(d)   45o

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Two transparent slabs have the same thickness as shown. One is made of material A of refractive index 1.5. The other is made of two materials B and C with thickness in the ratio 1:2. The refractive index of C is 1.6. If a monochromatic parallel beam passing through the slabs has the same number of waves inside both, the refractive index of B is

(a)   1.1                                      (b)   1.2

(c)   1.3                                      (d)   1.4

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: