1) Parallel incident light on a thin lens of focal lengthg f=-5cm has what effec

Question

1) Parallel incident light on a thin lens of focal lengthg f=-5cm has what effect on the refraction light? The refraction light is:
a)Maintained to be parrallel light after passing through the lens.
b)Brought to a focus after passing through the lens.
c)Diverged after passing through the lens.

2)To use a converging lens as a magnifying lens, the object to be seen magnified should be placed where in relation to the focal point of the lens?
a)Closer to the lens than focal lenght
b)At the focal point of the lens
c)farther from the lens than the focal lenght

3)If we want to increase the revolution of diffraction images, which of the following should be done?
a)Reduce the order of the spectrum used.
b)Reduce the slit spacing.
c)Increase the number of lines of the grating.
d)use redder colour light.

Explanation / Answer

1) Parallel incident light on a thin lens of focal lengthg f=-5cm has what effect on the refraction light? The refraction light is: b)Brought to a focus after passing through the lens. 2)To use a converging lens as a magnifying lens, the object to be seen magnified should be placed where in relation to the focal point of the lens? a)Closer to the lens than focal lenght 3)If we want to increase the revolution of diffraction images, which of the following should be done? c)Increase the number of lines of the grating.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.