The minimum distance between an object and its real image formed by a convex lens is
|
(a) 1.5 f |
(b) 2 f |
(c) 2.5 f |
(d) 4 f |
The minimum distance between an object and its real image formed by a convex lens is
|
(a) 1.5 f |
(b) 2 f |
(c) 2.5 f |
(d) 4 f |
Get the step-by-step solution for this question inside the Vidyadip app.
Get the answer in the appGenerate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
A voltmeter having resistance of 50 × 103 ohm is used to measure the voltage in a circuit. To increase the range of measurement 3 times the additional series resistance required is
|
(a) 105 ohm |
(b) 150 k.ohm |
(c) 900 k.ohm |
(d) 9 × 106 ohm |
A uniform electric field and a uniform magnetic field are produced, pointed in the same direction. An electron is projected with its velocity pointing in the same direction
|
(a) The electron will turn to its right |
|
(b) The electron will turn to its left |
|
(c) The electron velocity will increase in magnitude |
|
(d) The electron velocity will decrease in magnitude |
Magnetic flux in a circuit containing a coil of resistance 2Ω changes from 2.0 Wb to 10 Wb in 0.2 sec. The charge passed through the coil in this time is
|
(a) 0.8 C |
(b) 1.0 C |
(c) 5.0 C |
(d) 4.0 C |
The angle of minimum deviation measured with a prism is 30° and the angle of prism is 60°. The refractive index of prism material is
|
(a) |
(b) 2 |
(c) 3/2 |
(d) 4/3 |
In Young's double slit experiment, if one of the slit is closed fully, then in the interference pattern
|
(a) A bright slit will be observed, no interference pattern will exist |
|
(b) The bright fringes will become more bright |
|
(c) The bright fringes will become fainter |
|
(d) None of the above |
The binding energy per nucleon of
is 7.97 MeV and that of
is 7.75 MeV. The energy (in MeV) required to remove a neutron from
is
|
(a) 3.52 |
(b) 3.64 |
(c) 4.23 |
(d) 7.86 |