Central Board of Secondary Education (CBSE) conducts the board examination for 12th class every year in the month of March all over the country. It carries a huge importance as it paves the way for the higher education further.
In 12th class, Physics stands one of the most important and tough subject for the students and remains a sole factor in deciding the percentage of the students.
So, here we are providing 12 important questions on Physics which could be beneficial for the students in their final exams.
12th Board Physics Topic Wise Important Questions
1) Derive an expression for the de Broglie Wavelength of an electron moving under potential difference of V volt.
2) Calculate current drawn by the primary of a transformer which steps down 200V to 20V to operate a device of resistance 20Ω . Assume the efficiency of transformer to be 80%.
3) State the condition under which total internal reflection occurs. One face prism with a refracting angle of 30o coated with silver. A ray incident on another face at angle of 45o is refracted and reflected from silver coated face and retrace its path. Find the refractive index of the material of prism.
4) (a) Explain with the help of suitable nuclear reaction in each of the following case how neutron proton ratio changes during α decay & β decay
(b) Define actively of a radioactive sample give its S.I unit.
These were some selected important questions of Physics topic wise based on the new syllabus written by our experts for the students. More questions will be updates soon with similar pattern from other important remaining topics based on CBSE syllabus.
More questions will be provided as soon as our experts design them. All of the questions would be based on the new syllabus provided by the board.
All of the subjects in CBSE 10th & 12th will be covered in our sample papers and students should wait for rest of the model test papers.
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