The power of a converging lens is `4.5` D and that of a diverging lens is 3 D. The power of this combination of lenses placed close together is:

Question

The power of a converging lens is `4.5` D and that of a diverging lens is 3 D. The power of this combination of lenses placed close together is:

The power of a converging lens is `4.5` D and that of a diverging lens is 3 D. The power of this combination of lenses placed close together is:
A. `+1.5 D`
B. `+7.5 D`
C. `-7.5 D`
D. `-1.5 D`

Monjur Alahi

8 views

2025-01-04 04:42

1 Answers

Related Questions

The Convex lens behaves as a converging lens if it is kept in a medium with refractive index less than the refractive index of the lens.

2 Answers 5 Views

Air bubble in water behaves like a diverging lens because ……………………

2 Answers 5 Views

What are convex and concave lenses? For which condition, convex lens will have negative focal length?

2 Answers 6 Views

Which lenses can be considered as thin lenses?

2 Answers 5 Views

i. Lenses are kept in contact with each other ii. Two lenses kept at a distance d apart from each other.

2 Answers 9 Views

Two convex lenses of an astronomical telescope have focal length 1.3 m and 0.05 m respectively. Find the magnifying power and the length

2 Answers 22 Views

A point object O is placed on the principle axis of a convex lens of focal length 10 cm at 12 cm from the lens.

2 Answers 5 Views

A point object O is placed on the principle axis of a convex lens of focal length 10 cm at 12 cm from the lens.

2 Answers 6 Views

A diverging mirror is …………… A) A plane mirror B) Convex mirror

2 Answers 4 Views

If a magnification of, `-1`(minus 1) is obtained by using a converging lens, then the object has to be placed:

2 Answers 5 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - a)

8 views Answered 2023-02-05 15:29