MCQ
Infrared radiation is detected by
- ASpectrometer
- ✓Pyrometer
- CNanometer
- DPhotometer
✓
Answer
Correct option: B.
Pyrometer
(b) Infrared radiations are detected by pyrometer.
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
When a $12 \Omega$ resistor is connected with a moving coil galvanometer then its deflection reduces from 50 divisions to 10 divisions. The resistance of the galvanometer is
→A hollow sphere has radius $6.4 m$. Minimum velocity required by a motor cyclist at bottom to complete the circle will be
→A lift is going up. The total mass of the lift and the passenger is $1500\ kg.$ The variation in the speed of the lift is as given in the graph. The tension in the rope pulling the lift at t=
→A carnot engine has the same efficiency between $800 K$ to $500 K$ and $x K$ to $600 K$. The value of $x$ is
→The dimensional formula for the modulus of rigidity is
light of wavelength $5000 \mathring A$ falls on a sensitive plate with photoelectric work function of $1.9 \mathrm{eV}$. The kinetic energy of the photoelectron emitted will be
→A circular coil of $30$ turns and radius $8.0\, cm$ carrying a current of $6.0\, A$ is suspended vertically in a uniform horizontal magnetic field of magnitude $1.0\, T$. The field lines make an angle of $60^o$ with the normal of the coil. Calculate the magnitude of the counter torque that must be applied to prevent the coil from turning.....$Nm$
→Current in the circuit is wattless, if
A person speaking normally produces a sound intensity of $40 \mathrm{~dB}$ at a distance of $1 \mathrm{~m}$. If the threshold intensity for reasonable audibility is $20 d B$, the maximum distance at which he can be heard clearly is
→When a bimetallic strip is heated, it