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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the lens formula?
π‘ Hint: Remember how it relates distances for lenses.
Question 2
Easy
Define the term 'Magnification'.
π‘ Hint: Think about how images appear larger or smaller.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the correct formula for the lens?
- 1/f = 1/v + 1/u
- 1/f = 1/v - 1/u
- 1/f = -1/v + 1/u
π‘ Hint: Think of the signs and the type of lens.
Question 2
True or False: The refractive index can be greater than 1.
- True
- False
π‘ Hint: Consider what happens to light when it passes through different materials.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A concave mirror has a focal length of 10 cm. If an object placed 5 cm from the mirror causes an image to appear behind the mirror, calculate the image distance.
π‘ Hint: Pay attention to the sign conventions in the mirror formula.
Question 2
In a double-slit experiment, if the wavelength of light is 600 nm and slit separation is 0.2 mm, calculate the distance between bright fringes on a screen placed 3 m away.
π‘ Hint: Convert all units to meters before substitution for calculation.
Challenge and get performance evaluation