Answer:
The image distance is 17.56 cm
Explanation:
We have,
Height of light bulb is 3 cm.
The light bulb is placed at a distance of 50 cm. It means object distance is, u =-50 cm
Focal length of the lens, f = +13 cm
Let v is distance between image and the lens. Using lens formula :
So, the image distance is 17.56 cm.
Explanation:
Since, it is given that the magnet drops and falls lengthwise towards the canter of the ring. As a result, change in magnetic flux will occur which tends to induce an electric current in the ring.
Therefore, a magnetic field is also produced by the ring itself which will actually oppose or repel the magnet.
Thus, we can conclude that the falling magnet be repelled by the ring due to the magnetic interaction of the magnet and the ring.
Answer:
464.8 nm
Explanation:
The second wavelength of light can be calculated using the next equation:
<u>Where:</u>
<em>λ : is the wavelength of light</em>
<em>x: is the distance from the central maximum</em>
<em>d: is the distance between the spots </em>
<em>L: is the lenght from the screen to the bright spot</em>
For the first wavelength of light we have:
(1)
For the second wavelength of light we have:
(2)
By entering equation (1) into equation (2) we have:
Therefore, the second wavelength is 464.8 nm
I hope it helps you!