Embibe Experts Solutions for Exercise 1: Exercise

Author:Embibe Experts

Embibe Experts Physics Solutions for Exercise - Embibe Experts Solutions for Exercise 1: Exercise

Attempt the free practice questions from Exercise 1: Exercise with hints and solutions to strengthen your understanding. Physics Crash Course (Based on Revised Syllabus-2023) solutions are prepared by Experienced Embibe Experts.

Questions from Embibe Experts Solutions for Exercise 1: Exercise with Hints & Solutions

EASY
12th ICSE
IMPORTANT

Ray diagram for two lenses kept at some distance given in the diagram, which of the following option is correct (f1,f2=focal length; d=distance between lenses)

Question Image

MEDIUM
12th ICSE
IMPORTANT

The refractive index of material of a Plano-convex lens, if the radius of curvature of the plane surface R1 is infinite while the radius of curvature of convex surface R2 is 20 cm and focal length of the lens is 30 cm, will be:

EASY
12th ICSE
IMPORTANT

A biconvex lens made of glass (refractive index 1.5) has two spherical surfaces having radii 20 cm and 30 cm. Calculate its focal length.

EASY
12th ICSE
IMPORTANT

A concave lens of focal length 20 cm product an image half in size of the real object. The distance of the real object is

MEDIUM
12th ICSE
IMPORTANT

For two thin lenses kept in contact with each other, show that:

1F=1f1+1f2

where the terms have their usual meaning.

MEDIUM
12th ICSE
IMPORTANT

How is focal length defined for a two lens system, separated by distance d?

MEDIUM
12th ICSE
IMPORTANT

When two thin lenses are kept in contact, prove that their combined or effective focal length F is given by:
1F=1F1+1F2
where the terms have their usual meaning.