1) An optician prescribes spectacles to a patient with a combination of convex lens of focal length40cm and concave lens 25cm. The power of spectacles is

a) 6.0 D b) 1.5 D

c) -6.0 D d) -1.5 D.

2) The objective with large aperture are used in telescope for

a) ease of manufacture b) reducing lens aberration

c) greater resolution d) bright image.

3) A substance reduces to one sixteenth of its original mass in 2 hours. The half life period of thesubstance will be

a) 30 min b) 90 min

c) 45 min d) 60 min.

4) Determine order and degree (if defined) of y' + 5y = 0

a) degree undefined b) 2

c) 1 d) 3.

5) A homogeneous equation of the form dy/dx=h(x/y) can be solved by making the substitution

a) y=νx b) x=ν

c) x=νy d) ν=yx.

6) None of two girls / who were present / appeared to be inclined / to listen to sane advice.

a) None of two girls b) who were present

c) appeared to be inclined d) to listen to sane advice..

7) A train travelling at 48 kmph crosses another train, having half of its length and travelling inopposite direction at 42 kmph, in 12 seconds. It also passes a railway platform in 45 seconds.The length of railway platform is:

a) 200m b) 300m

c) 350m d) 400m.

8) If A = 26, SUN = 27 then CAT = ?

a) 24 b) 57

c) 58 d) 26.

9) The filament of an electric bulb is made of

a) Tungsten b) Nichrome

c) Graphite d) Iron.