A plane mirror produces an image that is:
- AReal, inverted and larger than the object.
- BReal, upright and same size as the object.
- CReal upright and smaller than the object.
- DVirtual, upright and the same size of the object.
A plane mirror produces an image that is:
Explanation:
So a plane mirror always forms a virtual, upright and same sized image.

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

In P-N junction, avalanche current flows in circuit when biasing is
| (a) Forward | (b) Reverse | (c) Zero | (d) Excess |
The ratio of de-Broglie wavelength of a a-particle to that of a proton being subjected to the same magnetic field so that the radii of their path are equal to each other assuming the field induction vector
is perpendicular to the velocity vectors of the a-particle and the proton is
|
(a) 1 |
(b) |
(c) |
(d) 2 |
The ratio of secondary to the primary turns in a transformer is 3 : 2. If the power output be P, then the input power neglecting all loses must be equal to
|
(a) 5 P |
(b) 1.5 P |
(c) P |
(d) |
In order to increase the angular magnification of a simple microscope, one should increase:
An object 2.5 cm high is placed at a distance of 10 cm from a concave mirror of radius of curvature 30 cm The size of the image is
|
(a) 9.2 cm |
(b) 10.5 cm |
(c) 5.6 cm |
(d) 7.5 cm |
When light is refracted from air into glass
|
(a) Its wavelength and frequency both increase |
|
(b) Its wavelength increases but frequency remains unchanged |
|
(c) Its wavelength decreases but frequency remains unchanged |
|
(d) Its wavelength and frequency both decrease |
In a two slit experiment with monochromatic light fringes are obtained on a screen placed at some distance from the sits. If the screen is moved by 5
towards the slits, the change in fringe width is 3
. If separation between the slits is
, the wavelength of light used is
|
(a) 6000 Å |
(b) 5000 Å |
(c) 3000 Å |
(d) 4500 Å |