Recent questions in Chapter 7: Lenses

0 votes

0 answers 132 views

An object kept 60 cm from a lens gives a virtual image 20 cm in front of the lens.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

0 answers 85 views

Three lenses having power 2, 2.5 and 1.7 D are kept touching in a row. What is the total power of the lens combination?

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

0 answers 174 views

5 cm high object is placed at a distance of 25 cm from a converging lens of focal length of 10 cm.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 267 views

Doctor has prescribed a lens having power +1.5 D. What will be the focal length of the lens? What is the type of the lens and what must be the defect of vision?

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 198 views

What is the function of iris and the muscles connected to the lens in human eye?

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 129 views

Distinguish between b. Concave lens and Convex Lens

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 179 views

Distinguish between: a. Farsightedness and Nearsightedness

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 350 views

Explain the working of an astronomical telescope using refraction of light.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 449 views

We can not clearly see an object kept at a distance less than 25 cm from the eye.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 167 views

One can sense colours only in bright light.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 638 views

Simple microscope is used for watch repairs.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 229 views

At which position will you keep an object in front of a convex lens so as to get a real image of the same size as the object ? Draw a figure.

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 361 views

Draw a figure explaining various terms related to a lens

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

0 votes

1 answer 228 views

Q1} Match the columns in the following table and explain them

asked Oct 9, 2021 in Chapter 7: Lenses by Doubtly (98.9k points)

To see more, click for the full list of questions or popular tags.

...