MCQ
10cm is a wavelength corresponding to the spectrum of:
- AInfrared rays
- BUltraviolet rays
- CMicrowaves
- DX-rays
✓
Answer
- Microwaves
Explanation:
Microwaves have wavelength around 10cm.
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
Light is:
The work function of a photoelectric material is 3.3 eV. The threshold frequency will be equal to
|
(a) 8 |
(b) 8 |
(c) 8 |
(d) 8 |
A mixer of $100\Omega$ resistance is connected to an A.C. source of 200V and 50 cycles/ sec. The value of average potential difference across the mixer will be:
→The avalanche breakdown in p-n junction is due to:
Which of the following quantities related to a lens depend on the wavelength or wavelengths of the incident light?
Inside a conductor electrostatic field is:
The maximum current that can be measured by a galvanometer of resistance 40 W is 10 mA. It is converted into a voltmeter that can read upto 50 V. The resistance to be connected in series with the galvanometer is ... (in ohm)
|
(a) 5040 |
(b) 4960 |
(c) 2010 |
(d) 4050 |
Unpolarised light is incident on a plane glass surface. For an angle of incidence __________ the reflected and refracted rays are perpendicular to each other?
Refractive index of glass $=1.5$.
→Refractive index of glass $=1.5$.
An infinite line charge produces a field of $9 \times 10^4 N / C$ at a distance of 2 cm . Calculate the linear charge density.
→Average energy stored in a pure inductance L when a current i flows through it, is
|
(a) |
(b) |
(c) |
(d) |
