but the points are only 25
Answer:
After passing through the glass plate, the red light disperses and meets at point.
The convex lens has two refracting surfaces, and convex kens is called as converging lens. So, at the exact center of the lens, one observes a Dark spot.
Thus, the correct option is a) one observes a dark spot.
Answer:
Explanation:
given,
dimension of rectangular surface = 3.20 cm x 3.90 cm
angle of magnetic field above horizontal = 32°
θ = 90° - 32° = 58°
flux = Ф = 3.80 ×10⁻⁴ Wb
Magnetic filed = ?


The magnetic field produced is equal to