Download App

Atoms — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsAtoms1 Mark
MCQ
The minimum wavelength of X-rays produced at accelerating potential V is $\lambda$. If the accelerating potential is changed to 4 V, the minimum wavelength would become :
  • A
    4$\lambda$
  • B
    2$\lambda$
  • ✓
    $\lambda/4$
  • D
    $\lambda/2$
✓

Answer

Correct option: C.
$\lambda/4$
C

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

If the capacitors in the previous question are joined in parallel, the capacitance and the breakdown voltage of the combination will be:
→
Conductivity of semiconductors due to increase in temperature :
→
A capacitor of capacity C has charge Q  and stored energy is W. If the charge is increased to 2Q, the stored energy will be(a) 2W(b) W/2(c) 4W(d) W/4
       
→
The cyclotron frequency of an electron grating in a magnetic field of 1 T is approximately(a) 28 MHz(b) 280 MHz(c) 2.8 GHz(d) 28 GHz
       
→
Who discovered the first spectral series?
→
The solid angle subtended by the total surface area of a sphere at the centre is:
→
Positive rays was discovered by (a) Thomson(b) Goldstem (c) W. Crookes (d) Rutherford
       
→
A charge of 10 e.s.u. is placed at a distance of 2 cm from a charge of 40 e.s.u. and 4 cm from another charge of 20 e.s.u. The potential energy of the charge 10 e.s.u. is (in ergs)(a) 87.5(b) 112.5(c) 150(d) 250
       
→
NAND and NOR gates are called universal gates primarily because they:
→
The number of turns of primary and secondary coils of a transformer are 5 and 10 respectively and the mutual inductance of the transformer is 25 henry. Now the number of turns in the primary and secondary of the transformer are made 10 and 5 respectively. The mutual inductance of the transformer in henry will be(a) 6.25(b) 12.5(c) 25       (d) 50
       
→