Help Contact For teachers and institutes

Mock Tests Classes

StemPy Lab

Learn. Solve. Code the solutions. Test yourself.

Live examsFree mock exams, timed and rankedEveryone starts together, and your score and rank come the moment it ends.See the exams →

Learn

Physics
Chemistry
Mathematics
Biology
Python Programming
Statistics & Data Science
Classes
Groups

Practice

Problems
Quizzes
Mock Tests
Prepare for an Exam
Question Sets
Exams
Certificates
Python Labs
AI Practice Generator
Student-Created Tests

Community

Discussions
Resources
Notes
Blog

Account

Log in

© 2026 senLearn. All rights reserved.Help About Contact Privacy Policy Terms of Use Refund Policy

A candle stands 60 cm from a thin convex lens that has… | StemPy Lab

Quizzes
A candle stands 60 cm from a thin convex lens that has a focal length of 30 cm. At what distance from the lens does the sharp image form?

PhysicsEasyHigh School (11–12)Optics

Created by StemPy Lab

A candle stands $60$ cm from a thin convex lens that has a focal length of $30$ cm. At what distance from the lens does the sharp image form?

← All Quizzes

← A student holds a lens just above a line of small print and sees larger, upright letters through it. Which lens could this be?The convex lens in a pair of reading spectacles has a focal length of 50 cm. What power does the optician write on the card, in dioptre? →

More onOptics

Discussion (0)

Log in to join the discussion.

Loading…

More questions on this topic

In Young's double-slit experiment, which of these changes does NOT change the fringe width?Hard
A slip of clear plastic with refractive index 1.7 and a thickness of 1.4 µm is stuck over one of…Hard
A thin soap film in air is lit from the front. When it is much thinner than the wavelength of…Hard
The molecules of a clear gas are far smaller than the wavelength of light, and they scatter light…Medium
On a clear day a student looks at a patch of sky far from the Sun. What explains the blue colour…Medium

All questions on this topic →

Problems on this topic

A teacher builds a double-slit experiment for a class…Hard
In a double-slit experiment the light has a wavelength of 550 nm…Medium
A soap film of refractive index 1.33 and thickness 380 nm stands in air…Medium
A lens of glass is coated with a thin layer of a clear material of refractive index 1.25, which is…Easy

All problems on this topic →