The first model of atom in 1898 was proposed by: - Vidyadip

Question

The first model of atom in 1898 was proposed by:

✓

Answer

J.J. Thomson

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

Explore more

More "M.C.Q (1 Marks)" from Atoms→Atoms — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

The unit of mutual conductance of a triode valve is

Correct match of column I with column II is

C-1 (waves)	C-II (Production)
(1) Infra-red	P. Rapid vibration of electrons in aerials
(2) Radio	Q. Electrons in atoms emit light when they move from higher to lower energy level.
(3) Light	R. Klystron valve
(4) Microwave	S. Vibration of atoms and molecules

→

Two bulbs are working in parallel order. Bulb $A$ is brighter than bulb $B.$ If $\mathrm{R}_{\mathrm{A}}$ and $\mathrm{R}_{\mathrm{B}}$ are their resistance respectively then

Predict the effect of length of conductor on drift velocity of electrons.

To construct a barometer, a tube of length $1m$ is filled completely with mercury and is inverted in a mercury cup. The barometer reading on a particular day is $76\ cm.$ Suppose a $1m$ tube is filled with mercury up to $76\ cm$ and then closed by a cork. It is inverted in a mercury cup and the cork is removed. The height of mercury column in the tube over the surface in the cup will be.

A vertical wire carrying a current in the upward direction is placed in horizontal magnetic field directed towards north. The wire will experience a force directed towards(a) North (b) South(c) East (d) West

In a step-up transformer, the turn ratio is 1 : 2. A Leclanche cell (e.m.f. 1.5V) is connected across the primary. The voltage developed in the secondary would be(a) 3.0 V(b) 0.75 V(c) 1.5 V (d) Zero

Electric flux over a surface in an electric field may be:

The angle of dip at a place on the earth gives(a) The horizontal component of the earth's magnetic field(b) The location of the geographic meridian(c) The vertical component of the earth's field(d) The direction of the earth's magnetic field

A certain amount of current when flowing in a properly set tangent galvanometer, produces a deflection of $45^{\circ}$. If the current be reduced by a factor of $\sqrt{3}$ , the deflection would