MCQ
When was Van de Graff generator invented and by whom?
  • A
    1944, Robin Van de Graff
  • B
    1932, Robert Van de Graff
  • C
    1933, Robin Van de Graff
  • D
    1933, Robert Van de Graff

Answer

  1. 1933, Robert Van de Graff

Explanation:

Van de Graff generator was invented by Robert Jemison Van de Graff on November 28, 1933. Robert Jemison invented the Van de Graff generator, which is a kind of high-voltage electrostatic generator that accelerates particles, while he was doing his PhD in Princeton University.

Need a full question paper?

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

Start Generating Free

Similar questions

A 20F capacitor is charged to 5V and isolated. It is then connected in parallel with an uncharged 30F capacitor. The decrease in the energy of the system will be

(a) 25 J

(b) 200 J

(c) 125 J  

(d) 150 J

When a current of 5A flows in the primary coil then the flux linked with the secondary coil is 200 weber. The value of coefficient of mutual induction will be
In Young's double slit experiment, at a fixed point where $\lambda$ is path difference $=\lambda / 6(\lambda=$ wavelength of the light used), the intensity is I. If $I _0$ is the maximum intensity then $I / I_0$ is equal to :
Which of the following is used as standard for determination of atomic mass unit?

What is the respective number of α and β  particles emitted in the following radioactive decay

(a) 6 and 8

(b) 8 and 8

(c) 6 and 6

(d) 8 and 6

Suppose the medium in the previous question is water. Select the correct option(s) from the list given in that question.
  1. vA > vB > vC
  2. vA < vB < vC
  3. vA = vB = vC
  4. $\text{v}_\text{B}=\frac{1}{2}(\text{v}_\text{A}+\text{v}_\text{C})$

Two long parallel wires P and Q are both perpendicular to the plane of the paper with distance 5 m between them. If P and Q carry current of 2.5 amp and 5 amp respectively in the same direction, then the magnetic field at a point half way between the wires is

(a)

(b)

(c)

(d)

If a diamagnetic solution is poured into a U-tube and one arm of this U-tube placed between the poles of a strong magnet with the meniscus in a line with the field, then the level of the solution will

(a) Rise

(b) Fall

(c) Oscillate slowly

(d) Remain as such

In a nuclear fission reaction

(a) Two light nuclei combine to produce a heavier nucleus

(b) A light nucleus bombarded by thermal neutrons breaks up

(c) A heavy nucleus bombarded by thermal neutrons breaks up

(d) A heavy nucleus breaks up by itself

Coherent sources of light produce constructive interference while there is a phase difference between them is :