Login
Get Advice on Live Video Call
Earn $ Cash $ with
consultations on Bissoy App

A spherical marble, of refractive index 1.5 and curvature 1.5 cm, contains a tiny air bubble at its centre.

Monjur Alahi

A spherical marble, of refractive index 1.5 and curvature 1.5 cm, contains a tiny air bubble at its centre. Where will it appear when seen from outside?

(A) 1 cm inside

(B) at the centre 

(C) 5/3 cm inside 

(D) 2 cm inside


0 like 0 dislike
10 views
Share with your friends

1 Answers

Salim Ahmed Kawsar

Call

Correct answer is (B) at the centre

0 like 0 dislike
8 views
A Soap bubble has a thickness of 90 nm and its refractive index is `mu" = 1.4"`. What colour does the bubble appear to be at a point on its surface cl

Correct Answer - green

2 Answers 1 views
A convex surface of radiys of curvature 20 cm separates air from glass of refractive index 1.5. Find the position and the nature of the image of a sma

Correct Answer - v = 13m, real image in glass medium

2 Answers 1 views
A glass sphere of radius 15 cm has a small bubble 6 cm from its centre. The bubble is viewed along a diameter of the sphere from the side on which it

Correct Answer - Virtual image is seen at 7.5 cm from the spherical surface

2 Answers 2 views
A convex lens of refractive index 1.5 is immersed in a liquid of refractive index (i) 1.6 (ii) 1.3 and (iii) 1.5. what changes happens to the focal le

Correct Answer - (i) - 8f (ii) `+3.25f` (iii) `oo`

2 Answers 1 views
The focal length of a plano-convex lens is 20 cm in air. Refractive index of glass is 1.5. Calculate (i) the radius of curvature of lens surface and (

Correct Answer - (i) `-10 cm` (ii) `-160 cm`

2 Answers 2 views
The refractive index of the kerosene is greater than the refractive index of water. 

A) both x and y are true

2 Answers 1 views
Refractive index of glass relative to water is 9/8. The refractive index of water relative to glass is ………………… 

Correct option is  D) 8/9

2 Answers 1 views
The refractive index of glass for light going from aif’to glass is 3/2. The refractive index of air for light going from glass to air …………………. 

Correct option is  C) 4/6

2 Answers 1 views
The refractive index of glass with respect to air is 3/2 and the refractive index of water with respect to air is 3/2.

Correct option is  D) 8/9

2 Answers 1 views
The Convex lens behaves as a converging lens if it is kept in a medium with refractive index less than the refractive index of the lens. 

B) Both statements are false

2 Answers 1 views

Log in to ask questions, provide answers, or leave comments.


Login

Install the Bissoy app to consult with a doctor.


Download