1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
In Young's double slit experiment, how many maxima can be seen on a screen (including central maxima) if $d = \dfrac{5\lambda}{2}$ (where $\lambda$ is wavelength of light and $d$ is distance between the two slits).
A
$5$
B
$4$
C
$7$
D
$1$
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Variation of photoelectric current with anode potential is shown below. Choose the correct option ($V_0$ = stopping potential)
A
B
C
D
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Work function of the metal is
A
Maximum possible energy acquired by an electron
B
Equal for all metals
C
Minimum energy required by an electron to just eject from metal surface
D
Maximum energy which is given to electron to move out of metal surface
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
An electron transition takes place from excited state to ground state in hydrogen atom, then
A
Its kinetic energy increases but potential energy and total energy decrease
B
Its kinetic energy, potential energy and total energy decrease
C
Kinetic energy decreases, potential energy increases but total energy remains same
D
Kinetic energy and total energy decrease but potential energy increases