Answer : Option AExplaination / Solution:
It executes simple harmonic motion because in this motion restoring force is directly proportional to the displacement towards the mean position at any time.
Q9.Basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc are
Answer : Option AExplaination / Solution:
Semiconductors are materials that have electrical conductivity between conductors such as most metals and nonconductors or insulators like ceramics. Semiconductor material is used in the manufacturing of electrical components and used in electronic devices such as transistors and diodes.
Semiconductors are the basic materials used in the present solid state electronic devices like diode, transistor, ICs etc
Answer : Option AExplaination / Solution:
The orbit of a planet around the Sun (or of a satellite around a planet) is not a perfect circle. It is an ellipse—a “flattened” circle. The Sun (or the centre of the planet) occupies one focus of the ellipse. A focus is one of the two internal points that help determine the shape of an ellipse. The distance from one focus to any point on the ellipse and then back to the second focus is always the same.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0