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The Central Board of Secondary Education is a Board of Education for public and private schools, under the Union Government of India. The CBSE was formed in 1962. You are looking for the Central Board of Secondary Education class 12th Maths, Physics solved question paper, here i am providing: Physics: Unstable equilibrium when the electric filed is directed at an angle with the dipole axis i.e., when E is not parallel to p . Which part of electromagnetic spectrum is used in radar systems? (1) Solution: The microwave range of electromagnetic spectrum is used in radar systems. Calculate the speed of light in a medium whose critical angle is 30°. A glass lens of refractive index 1.45 disappears when immersed in a liquid. What is the value of refractive index of the liquid? (1) Write the expression for Bohr’s radius in hydrogen atom A wire of resistance 8R is bent in the form of a circle. What is the effective resistance between the ends of a diameter AB? A coil Q is connected to low voltage bulb B and placed near another coil P as shown in the figure. Give reasons to explain the following observations: (2) In a meter bridge, the null point is found at a distance of A cm from A. If now a resistance of X is connected in parallel with S, the null point occurs at /2 cm. Obtain a formula for X in terms of /1, /2 and S. For more detailed question paper, here is attachment:
__________________ Answered By StudyChaCha Member |