When the wavelength of light is doubled, its A. frequency doubles B. frequency a

Question

When the wavelength of light is doubled, its A. frequency doubles B. frequency and speed are doubled C. energy doubles D. speed is unchanged but frequency is halved. The similarity between microwave and x - ray is that A. both have the same wavelength B both have the same energy C. both have the same speed in vacuum D. both have the same frequency. A current-carrying wire is in a magnetic field with the direction of the current the same as that of the field. A. The wire tends to move parallel to the field B The wire tends to move perpendicular to the field C. The wire tends to turn until it is perpendicular to the field D. The wire has no tendency to move or to turn

Explanation / Answer

25 .Velocity=wavelength*frequency

is wavelength doubles,frequency will be halved

option(D) is correct

26

Both have same speed

27

since direction of current is as that of field

force will be zero

so

option(D) is correct

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

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