INSTRUCTIONS MaximumMarks : 264

1. The question paper has three parts: Physics, Chemistry and Mathematics. Each part has three sections.

2. Section 1 contains 8 questions. The answer to each question is a single digit integer ranging from 0 to 9 (both inclusive).

Marking Scheme: +4 for correct answer and 0 in all other cases.

3. Section 2 contains 10 multiple choice questions with one or more than one correct option.

Marking Scheme: +4 for correct answer, 0 if not attempted and – 2 in all other cases.

4. Section 3 contains 2 “ match the following ” type questions and you will have to match entries in Column I with the entries in Column II.

Marking Scheme: for each entry in Column I , +2 for correct answer, 0 if not attempted and -1 in all other cases.

PART-I: PHYSICS

Section 1 (Maximum Marks: 32)

This section contains EIGHT questions.

The answer to each question is a SINGLE DIGIT INTEGER ranging from 0 to 9, both inclusive.

Marking scheme:

+4 If the bubble corresponding to the answer is darkened.

0 In all other cases.

Consider a concave mirror and a convex lens (refractive index = 1.5) of focal length 10 cm each, separated by a distance of 50 cm in air (refractive index = 1) as shown in the figure. An object is placed at a distance of 15 cm from the mirror. Its erect image formed by this combination has magnification M 1 . When the set- up is kept in a medium of refractive index 7/6, the magnification becomes M 2 . The magnitude is