1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

The potential difference applied to an X-ray tube is decreased. As a result, in the emitted radiation,

A
the intensity increases
B
the intensity decreases
C
the minimum wavelength increases
D
the minimum wavelength decreases
2
BITSAT 2020
MCQ (Single Correct Answer)
+3
-1
Lights of two different frequencies whose photons have energies 1.5 eV and 2.5 eV respectively illuminate a metallic surface whose work function is 0.5 eV successively. Ratio of maximum speeds of emitted electrons will be
A
3 : 2
B
2 : 3
C
$$\sqrt3$$ : $$\sqrt2$$
D
$$1 :\sqrt 2 $$
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