Skip to content

+91 87932 47779

Email Us

Online Support

+91 87932 47779

Email Us At
- vgyanhubpune@gmail.com
- vgyanhubdhule@gmail.com

Menu

Email Us At
- vgyanhubpune@gmail.com
- vgyanhubdhule@gmail.com

Menu

Home
About Us
Courses
Knowledge Base
Events
Testimonials
Contact Us

Home
About Us
Courses
Knowledge Base
Events
Testimonials
Contact Us

Menu

Home
About Us
Courses
Knowledge Base
Events
Testimonials
Contact Us

Try Out Our Free Tests

qUESTIONS

Two thin lenses have a combined power of +9D. When they are separated distance of 20 cm, then their equivalent power becomes +27/5 D. Their individual power (in dioptre) is respectively:

The speed of light in two media M1 and M2 are 1.5×10^8 m/s and 2×10^8 m/s respectively. If the light undergoes total internal reflection, the critical angle between the two media is:

A convex lens is dipped in a liquid whose refractive index is equal to refractive index of lens material. Then its focal length will:

A compound microscope produces a magnification of 24 The focal length of the eyepiece is 5 cm. The final image is formed at the least distance of distinct vision. The magnification produced by the objective is:

An equiconvex lens has radius of curvature R. The refractive index of the material of the lens when numerical value of R and focal length Fare same is:

A convex lens ‘A’ of focal length 20 cm and a concave lens ‘B’ of focal length 56 cm are kept along the same axis with the distance ‘d’ between them. If a parallel beam of light falling on A leaves B as a parallel beam, then the magnitude of distance d (in cm) is:

Light travels through a glass plate of thickness t and having refractive index n. If c is the velocity of light in vacuum, the time taken by the light to travel this thickness of glass is

The wavelength of light diminishes µ times (µ = 1.33 for water) in a medium. A diver from inside water looks at an object whose natural colour is green. He sees the object as

Speed of light is maximum in

Monochromatic light is refracted from air into the glass of refractive index µ. The ratio of the wavelength of incident and refracted waves is

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

vgyanlogo

Access To All Courses from VgyanHub

Popular Courses

12th Physics | Maharashtra State Board | Full Course
Physics | JEE Main | Full Course
Physics | NEET | Full Course

Company

Home
About Us
Courses
Testimonials
Knowledge Base

Need Some Help?

Contact Us

© Copyright 2024 VgyanHub & Designed by PanGrow Tech Pvt. Ltd.