# JMI Class XII Physics Sample Question Paper 2020 Download Free PDF

Jamia Millia Islamia (JMI) 2020 Class XII Physics Sample Question paper with answers JMI Class XII Physics Sample 2020 Question with solution you can download it in FREE, if JMI Class XII Physics 2020 paper in text or pdf for JMI Class XII Physics Sample 2020 Answer Keys you can download JMI 2020 page also just Go to menu bar, Click on File->then Save. Jamia Millia Islamia (JMI) 2020 Class XII Physics Sample Question paper Free Download PDF is available in www.oldquestionpapers.net which has been provided by many students this JMI 2020 paper is available for all the students in FREE and also JMI Class XII Physics Question paper 2020 fully solved JMI with answer keys and solution.

You can get daily updates on JMI 2020 from www.oldquestionpapers.net here  you can also check similar links for other related study materials on JMI Class XII Physics (MCQ) Here Jamia Millia Islamia (JMI) Class XII Physics question bank 2020 is also available in Class XII Physics, English Language.

SAMPLE QUESTIONS

Q1. An object is placed in front of convex lens made of glass. How does the image distance vary if the refractive index of the medium is increased in such a way that still it remains less than the glass?

Q2. Name the network within an institution, made by connecting all or some of their computers.

Q3. Two cells of E.M.F. 10 V and 2 V and internal resistances 10 Ω and 5 Ω respectively, are connected in parallel as shown. Find the effective voltage across R.

Q4. A monochromatic light source of power 5mW emits 8X1015 photons per second. This light ejects photoelectrons from a metal surface. The stopping potential for this set up is 2V. Calculate the work function of the metal.

Q5. Distinguish between any two types of propagation of Electromagnetic waves with respect to (i) frequency range over which they are applicable (ii) communication systems in which they are used.

Q6. Given a uniformly charged plane/ sheet of surface charge density σ = 2X1017 C/m2

(i) Find the electric field intensity at a point A, 5mm away from the sheet on the left side.

(ii) Given a straight line with three points X, Y & Z placed 50 cm away from the charged sheet on the right side. At which of these points, the field due to the sheet remain the same as that of point A and why?

Q7. The potential difference across a resistor ‘r’ carrying current ‘I’ is Ir.

(i) Now if the potential difference across ‘r’ is measured using a voltmeter of resistance ‘Rv’, show that the reading of voltmeter is less than the true value.

(ii) Find the percentage error in measuring the potential difference by a voltmeter.

(iii) At what value of Rv, does the voltmeter measures the true potential difference?

Q8. You are given two sets of potentiometer circuit to measure the emf E1 of a cell.

Set A: consists of a potentiometer wire of a material of resistivity ρ1, area of cross-section A1 and length l.

Set B: consists of a potentiometer of two composite wires of equal lengths l/2 each, of resistivity ρ1, ρ2 and area of cross-section A1, A2 respectively.

(i) Find the relation between resistivity of the two wires with respect to their area of cross section, if the current flowing in the two sets is same.

(ii) Compare the balancing length obtained in the two sets.

Q9. A compound microscope consists of an objective of focal length 1cm and eye piece of focal length 5cm separated by 12.2cm. (a) At what distance from the objective should an object be placed so that the final image is formed at least distance of distinct vision? (b) Calculate the angular magnification in this case.

Q10. Compare the photoelectric effect on the basis of photon theory and wave theory of light and hence explain why the wave theory failed to explain it. Class XII Physics 2015-2016