- AMyopia
- BHypermetropia
- ✓Astigmatism
- DPresbyopia
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A convex mirror of focal length f forms an image which is times the object. The distance of the object from the mirror is
|
(a) (n – 1)f |
(b) |
(c) |
(d) (n + 1)f |
Which of the following figure represents the variation of particle momentum and the associated de-Broglie wavelength
|
(a)
|
(b)
|
(c)
|
(d)
|

Cathode rays are
|
(a) Positive rays |
(b) Neutral rays |
(c) He rays |
(d) Electron waves |
When NPN transistor is used as an amplifier
|
(a) Electrons move from base to collector |
|
(b) Holes move from emitter to base |
|
(c) Electrons move from collector to base |
|
(d) Holes move from base to emitter |
Electric charge is uniformly distributed along a long straight wire of radius 1mm. The charge per cm length of the wire is Q coulomb. Another cylindrical surface of radius 50 cm and length 1m symmetrically encloses the wire as shown in the figure. The total electric flux passing through the cylindrical surface is
|
(a) |
(b) |
(c) |
(d) |
The effective resistance between the points A and B in the figure is
|
(a) 5Ω |
(b) 2 Ω |
(c) 3 Ω |
(d) 4 Ω |