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Class 12 | Ray Optics
Topic — Lens Maker's Formula Formula Used 1. When a lens of refractive index μ2 is placed in a medium of refractive index μ1 then 1/f = (μ21-1)[1/R1-1/R2] OR 1/f = [(μ2/μ1)-1][1/R1-1/R2] 2. When the lens is placed in the air then μ1 = 1 and μ2 = μ then 1/f = (μ-1)[1/R1-1/R2] Sign Convention 1 )…
Set 3 | CBSE Physics Class 12th Board Question Paper 2018
SET -3 Section A Q.1) Which mode of propagation is used by short wave broadcast services? (1) Q.2) Four nuclei of an element undergo fusion to form a heavier nucleus, with release of energy. Which of the two — the parent or the daughter nucleus — would have higher binding energy per nucleon?…
SET – 2 |CBSE Physics Class 12th Board Question Paper 2018
SET -2 Section A Q.1) Draw the graph showing the variation photoelectric current with applied voltage for two incident radiations of equal frequency and different intensities. Mark the graph for the radiation of higher intensity. (1) Q.2) A proton and an electron travelling along parallel paths enter a region of…
CBSE Physics Class 12th Board Question Paper 2018
SET -1 Section A Q.1) A proton and an electron travelling along parallel paths enter a region of uniform magnetic field, acting perpendicular to their paths. Which one of them will move in a circular path with higher frequency? (1) Q.2) Name the electromagnetic radiation used for (a) water purification, and…