CBSE Class 12 Physics Question Paper Solved 2019 Set L

CBSE Class 12 Physics Question Paper Solved 2019 Set L. Students can download the last year board exams question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

SECTION A

1. Plot a graph of stopping potential (V_o) versus the frequency (v) of incident radiation in photoelectric emission.

2. Name the charge carriers for the flow of current in a (i) conductor and (ii) electrolyte.

3. Why are the antennas in space wave mode of propagation generally mounted at heights of many wavelengths above the ground ?

4. Two identical conducting balls A and B have charges –Q and +3Q respectively. They are brought in contact with each other and then separated by a distance d apart. Find the nature of the Coulomb force between them.

OR

A metallic spherical shell has an inner radius R₁ and outer radius R₂. A charge Q is placed at the centre of the shell. What will be the surface charge density on the (i) inner surface, and (ii) outer surface of the shell ?

5. The small ozone layer on top of the stratosphere is crucial for human survival. Why ?

OR

Illustrate by giving suitable examples, how you can show that electromagnetic waves carry energy and momentum.

SECTION B

6. Two long straight wires carrying currents of 2 A and 5 A in the same direction are kept parallel, 10 cm apart from each other. Calculate the force acting between them and write its nature.

7. A parallel plate capacitor of plate area A each and separation d, is being charged by an ac source. Show that the displacement current inside the capacitor is the same as the current charging the capacitor. 

Please click the link below to download pdf file of CBSE Class 12 Physics Question Paper Solved 2019 Set L.