A proton and a deutron both having the same kinetic energy, enter perpendicularly into a uniform magnetic field B. For motion of proton and deutron on circular path of radius 
and 
respectively, the correct statement is
|
(a) |
(b) |
(c) |
(d) |
(a) 
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Figure here shows P and Q as two equally intense coherent sources emitting radiations of wavelength 20 m. The separation PQ is 5.0 m and phase of P is ahead of the phase of Q by 90o. A, B and C are three distant points of observation equidistant from the mid-point of PQ. The intensity of radiations at A, B, C will bear the ratio
|
(a) 0 : 1 : 4 |
(b) 4 : 1 : 0 |
(c) 0 : 1 : 2 |
(d) 2 : 1 : 0 |
From the graph between current I and voltage V shown below, identify the portion corresponding to negative resistance
|
(a) AB |
(b) BC |
(c) CD |
(d) DE |
Two plane mirrors are at right angles to each other. A man stands between them and combs his hair with his right hand. In how many of the images will he be seen using his right hand
| (a) None | (b) 1 | (c) 2 | (d) 3 |
Which of the following graphs shows the variation of magnetic induction B with distance r from a long wire carrying current
|
(a)
|
(b)
|
(c)
|
(d)
|
A man can see only between 75 cm and 200 cm. The power of lens to correct the near point will be
|
(a) + 8/3 D |
(b) + 3 D |
(c) – 3 D |
(d) – 8/3 D |
The light reflected by a plane mirror may form a real image
|
(a) If the rays incident on the mirror are diverging |
|
(b) If the rays incident on the mirror are converging |
|
(c) If the object is placed very close to the mirror |
|
(d) Under no circumstances |
