Download App

Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter1 Mark
Question
Mark the correct option of source which is associated with a line emission spectrum:
✓

Answer

  1. Neon street sign
Explanation:
Neon lighting consists of brightly glowing, electrified glass tubes or bulbs that contain rarefied neon or other gases.
Neon lights are a type of cold cathode gas-discharge light.
Hence neon street sign are associated with line emission spectrum.

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 Dual Nature of Radiation and Matter→Dual Nature of Radiation and Matter — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Two short magnets having magnetic moments in the ratio 27 : 8, when placed on opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is 0.12 m from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is(a) 0.06 m(b) 0.08 m(c) 0.12 m(d) 0.18 m
       
→
If the current is doubled, the deflection is also doubled in:
→
Radioactivity was discovered by (a) Becquerel(b) Pierre Curie(c) Roentgen(d) Rutherford
       
→
An inductance $L$ and a resistance $R$ are first connected to a battery. After some time the battery is disconnected but $L$ and $R$ remain connected in a closed circuit. Then the current reduces to $37\%$ of its initial value in
→
Two parallel wires carry currents of 20A and 40A in opposite directions. Another wire carying a current anti parallel to 20A is placed midway between the two wires. T he magnetic force on it will be:
  1. Towards 20A.
  2. Towards 40A.
  3. Zero.
  4. Perpendicular to the plane of the currents.
→
In case of a real and inverted image, the magnification created by the mirror is:
→
Two long straight parallel conductors separated by a distance of $0.5m$ carry currents of $5A$ and $8A$ in the same direction. The force per unit length experienced by each other is
→
The ratio of resistance in forward and reverse bias arrangements in a $P - N$ junction diode is :
→
For which of the following colour, the magnifying power of a microscope will be maximum(a) White colour (b)  Red colour (c) Violet colour (d)  Yellow colour 
       
→
When current passes through the circuit a compass needle rests in which direction (with respect to the Earth)?
→