Semiconductor Electronics: Materials, Devices and Simple Circuits — Physics STD 12 Science — Question

What are the main sources of electro- magnetic waves?

A plane loop of rectangular shape is moved in such a uniform magnetic field which is perpendicular to the plane of the loop. What is the direction and magnitude of induced current in the loop?

Write name of electromagnetic radiation with highest penetration power.

How does the value of capacitance depend on the condition of the dielectric material when the space between the plates of a parallel plate capacitor is partially filled with a dielectric material?

How do we get energy from the Sun?

If the angle between the pass axis of polarizer and the analyser is 45°, write the ratio of the intensities of original light and the transmitted light after passing through the analyser.

Answer the following questions, which help you understand the difference between Thomson’s model and Rutherford’s model better.
Is the probability of backward scattering (i.e., scattering of α-particles at angles greater than 90°) predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?