Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

Olympiad workbook

Exam: Olympiad workbook
Subject: NSEP
Chapter: Ray Optics

Olympiad workbook · NSEP · Ray Optics

The aperture diameter of a plano-convex lens is 6 cm and its...

The aperture diameter of a plano-convex lens is 6 cm and its thickness is 3 mm . If the speed of light through its material is

v=2 \times 10^8 \mathrm{~m} / \mathrm{s}

, the focal length of the lens is

Options

A40 cm
B35 cm
C30 cm
D20 cm

Correct answer

C. 30 cm

Step-by-step solution

No Solution

Practice Ray Optics on Quantrex Academy →

More from Ray Optics

Consider a manual camera with a lens having a focal length of 5 cm . It is focused at… Olympiad workbook A point source of light is viewed through a plate of glass of thickness t and of… Olympiad workbook A small fish, 4 cm below the surface of a lake, is viewed through a thin converging lens… Olympiad workbook Two identical lenses made of the same material of refractive index 1.5 have the focal… Olympiad workbook In case of real images formed by a thin convex lens, the linear magnification is (I)… Olympiad workbook A horizontal ray of light passes through a prism of refractive index 1.5 and apex angle… Olympiad workbook When observed from the earth the angular diameter of the sun is 0.5 degree. The diameter… Olympiad workbook An object 1 cm long lies along the principal axis of a convex lens of focal length 15 cm… Olympiad workbook Full Ray Optics list All Olympiad workbook PYQs