EASY
12th Odisha Board
IMPORTANT
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The refractive index of diamond is 2.0. Find the approximate velocity of light in diamond in cm per second .

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Important Questions on Refraction, Dispersion and Lens

MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 12 - Refraction, Dispersion and Lens>MODEL QUESTIONS>Q 12
Critical angle of light passing from glass to air is minimum for:
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 12 - Refraction, Dispersion and Lens>MODEL QUESTIONS>Q 13
An equilateral triangular prism of glass μ=1.5 .A ray of light is incident normally on one of the faces. The angle between the incident and emergent ray is :
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 12 - Refraction, Dispersion and Lens>MODEL QUESTIONS>Q 14
An equilateral prism is made of a material of refractive index 3. The angle of minimum deviation for the prism is :
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 12 - Refraction, Dispersion and Lens>MODEL QUESTIONS>Q 15
The radii of curvature of two faces of a lens are 20 cm and 30 cm and the refractive index of the material of the lens is 1.5. If the lens is concave-convex, then the focal length of the lens is :
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 12 - Refraction, Dispersion and Lens>MODEL QUESTIONS>Q 16
The minimum distance between object and it's real image formed by a convex lens is:
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 12 - Refraction, Dispersion and Lens>MODEL QUESTIONS>Q 17
The lens with power +2 D is placed in contact with a lens with power -1 D. The combination will behave like:
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 12 - Refraction, Dispersion and Lens>MODEL QUESTIONS>Q 18
An equiconvex lens is made from glass of refractive index 1.5. If the radius of each surface is changed from 5cm to 6cm, then the power:
EASY
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 12 - Refraction, Dispersion and Lens>MODEL QUESTIONS>Q 19
A lens forms a virtual image 4 cm away from it when the object is placed 10 cm away from it. The lens is of focal length :