MCQ
Emission spectrum of $\mathrm{CO}_2$ gas:
- AIs a line spectrum
- ✓Is a band spectrum
- CIs a continuous spectrum
- DDoes not fall in the visible region
✓
Answer
Correct option: B.
Is a band spectrum
The emission spectrum of $\mathrm{CO}_2$ gas that has been studied by the electron beam excitation method is a band spectrum.
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
In a room containing air, heat can go from one place to another:
Fig. shows rough sketch of meter bridge. $(G)$ deflects zero at length $l\, cm$. Now $R_1$ and $R_2$ are interchanged then balancing length increases by $25\, cm$. Find $R_1/R_2$
→A $50\, W$ bulb is in series with a room heater and the combination is connected across the mains. To get max. heater output the $50\, W$ bulb should be replaced by ......$W$
→A message signal of frequency $3\,kHz$ is used to modulate a carrier signal of frequency $1.5\,MHz$. The bandwidth of the amplitude modulated wave is
→When the conductivity of a semiconductor is only due to breaking of covalent bonds, the semiconductor is called:
Two different coils have self-inductance ${L_1} = 8\,mH$, ${L_2} = 2\,mH$. The current in one coil is increased at a constant rate. The current in the second coil is also increased at the same rate. At a certain instant of time, the power given to the two coils is the same. At that time the current, the induced voltage and the energy stored in the first coil are ${i_1},\;{V_1}$ and ${W_1}$ respectively. Corresponding values for the second coil at the same instant are ${i_2},\;{V_2}$ and ${W_2}$ respectively. Then
→An infinitely long cylinder is kept parallel to an uniform magnetic field B directed along positive z axis. The direction of induced current as seen from the z axis will be
Three long concentric conducting cylindrical shells have radii $R, 2R$ and $2\sqrt 2 $ $ R$ . Inner and outer shells are connected to each other. The capacitance across middle and inner shells per unit length is:
→A piece of copper and the other of germanium are cooled from the room temperature to $80\, K$, then which of the following would be a correct statement
→When an unpolarized light of intensity, $I_0$ is incident on a polarizing sheet, the intensity of light which does not get transmitted is
→