1
)
Which images are always formed when an object is placed behind a converging lens?
Multiple Choice
a
.
real and upright
b
.
real and inverted
c
.
virtual and upright
d
.
virtual and inverted
e
.
none of the above
2
)
What is the magnification when the image is virtual?
Multiple Choice
a
.
greater than
0
b
.
less than
0
c
.
equal to
0
3
)
What is the magnification when the image is real?
Multiple Choice
a
.
greater than
0
b
.
less than
0
c
.
equal to
0
4
)
What is the focal length of a converging lens?
Multiple Choice
a
.
greater than
0
cm
b
.
less than
0
cm
c
.
equal to
0
cm
5
)
Which images are always formed when an object is placed behind a diverging lens?
Multiple Choice
a
.
real and upright
b
.
real and inverted
c
.
virtual and upright
d
.
virtual and inverted
e
.
none of the above
Please provide an explanation too. Thanks.
Question:
1
)
Which images are always formed when an object is placed behind a converging lens?
Multiple Choice
a
.
real and upright
b
.
real and inverted
c
.
virtual and upright
d
.
virtual and inverted
e
.
none of the above
2
)
What is the magnification when the image is virtual?
Multiple Choice
a
.
greater than
0
b
.
less than
0
c
.
equal to
0
3
)
What is the magnification when the image is real?
Multiple Choice
a
.
greater than
0
b
.
less than
0
c
.
equal to
0
4
)
What is the focal length of a converging lens?
Multiple Choice
a
.
greater than
0
cm
b
.
less than
0
cm
c
.
equal to
0
cm
5
)
Which images are always formed when an object is placed behind a diverging lens?
Multiple Choice
a
.
real and upright
b
.
real and inverted
c
.
virtual and upright
d
.
virtual and inverted
e
.
none of the above
Please provide an explanation too. Thanks.
This is AI generated Response.
Asked by: Gurusharan
Created at: 2025-08-03 22:03:05
Final Answer:
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Sure! Here are the answers with brief explanations.
---
**1) Which images are always formed when an object is placed behind a converging lens?**
- a. real and upright
- **b. real and inverted**
- c. virtual and upright
- d. virtual and inverted
- e. none of the above
**Explanation:**
A converging lens (convex lens) forms a real, inverted image when the object is placed beyond the focal point (i.e., behind the lens at a distance greater than the focal length). The only exception is when the object is between the focal point and the lens: then, the image is virtual and upright. But **if the object is behind the lens (beyond the focal length), the image is always real and inverted**.
---
**2) What is the magnification when the image is virtual?**
- **a. greater than 0**
- b. less than 0
- c. equal to 0
**Explanation:**
Virtual images formed by lenses are always upright, and their magnification is positive (greater than 0).
---
**3) What is the magnification when the image is real?**
- a. greater than 0
- **b. less than 0**
- c. equal to 0
**Explanation:**
Real images formed by lenses are always inverted, and their magnification is negative (less than 0).
---
**4) What is the focal length of a converging lens?**
- **a. greater than 0 cm**
- b. less than 0 cm
- c. equal to 0 cm
**Explanation:**
A converging lens (convex lens) always has a positive focal length.
---
**5) Which images are always formed when an object is placed behind a diverging lens?**
- a. real and upright
- b. real and inverted
- **c. virtual and upright**
- d. virtual and inverted
- e. none of the above
**Explanation:**
A diverging lens (concave lens) always forms a virtual, upright, and reduced image, no matter where the object is placed.
---
**Summary Table**
| # | Correct Answer | Explanation |
|---|----------------|-------------|
| 1 | b | Real & inverted for objects behind converging lens |
| 2 | a | Virtual image: magnification > 0 (upright) |
| 3 | b | Real image: magnification < 0 (inverted) |
| 4 | a | Converging lens: positive focal length |
| 5 | c | Diverging lens: always virtual & upright |
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