MCQ
Two streams of protons move parallel to each other in the same direction. They will:
- AAttract each other
- BRepel each other
- CNeither attract nor repel
- DRotate
✓
Answer
- Attract each other
Explanation:
Two streams of protons move parallel to each other in the same direction.
So, we can assume that they are two wires carrying current in same direction.
We know that two parallel wires having same direction of current attract each other.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Photoelectric effect was successfully explained first by
|
(a) Planck |
(b) Hallwash |
(c) Hertz |
(d) Einstein |
A point source of light is placed in front of a plane mirror:
- All the reflected rays meet at a point when produced backward.
- Only the reflected rays close to the normal meet at a point when produced backward.
- Only the reflected rays making a small angle with the mirror, meet at a point when produced backward.
- Light of different colours make different images.
Assertion : The colour of the green flower seen through red glass appears to be dark.
Reason : Red glass transmits only red light.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
A current of 5 ampere is flowing in a wire of length 1.5 metres. A force of 7.5 N acts on it when it is placed in a uniform magnetic field of 2 Tesla. The angle between the magnetic field and the direction of the current is
|
(a) 30° |
(b) 45° |
(c) 60° |
(d) 90° |
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
The thermo e.m.f. of a thermocouple varies with the temperature θ of the hot junction as 
in volts where the ratio a/b is 700℃. If the cold junction is kept at 0℃, then the neutral temperature is
|
(a) 700℃ |
|
(b) 350℃ |
|
(c) 1400℃ |
|
(d) No neutral temperature is possible for this thermocouple |
The anode of a thermionic diode is connected to the negative terminal of a battery and the cathode to its positive terminal:
In a cathode ray oscillograph, the focusing of beam on the screen is achieved by:
In a L - C - R circuit, as the frequency of an alternating current increases the impedance of the circuit.
In the circuit shown below, calculate the current flowing through 20V cell.
