1
AP EAPCET 2024 - 19th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
A golf ball of mass $m \mathrm{~g}$ has a speed of $50 \mathrm{~ms}^{-1}$. If the speed can be measured within accuracy of $2 \%$ the uncertainty in the position is (in m)
A
$\frac{h}{4 \pi m}$
B
$\frac{h}{16 \pi m}$
C
$\frac{h}{4 \pi m} \times 10^3$
D
$\frac{h}{16 \pi m} \times 10^3$
2
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The de-Broglie wavelength of a particle of mass 1 mg moving with a velocity of $10 \mathrm{~ms}^{-1}$ is $\left(\mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}\right.$ )
A
$6.63 \times 10^{-20} \mathrm{~m}$
B
$663 \times 10^{-31} \mathrm{~m}$
C
$663 \times 10^{-34} \mathrm{~m}$
D
$663 \times 10^{-22} \mathrm{~m}$
3
AP EAPCET 2024 - 18th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
Correct set of four quantum numbers for the valence electron of strontium $(z=38)$ is
A
$5.0 .0+\frac{1}{2}$
B
$51, a+\frac{1}{2}$
C
$5.11+\frac{1}{2}$
D
$6, a a+\frac{1}{2}$
4
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The wavelength associated with the electron moving in the first orbit of hydrogen atom with velocity $$2.2 \times 10^6 \mathrm{~ms}^{-1}$$ (in nm) is

$$\left(m_e=9.0 \times 10^{-31} \mathrm{~kg}, h=6.6 \times 10^{-34} \mathrm{Js}\right)$$

A
0.66
B
0.33
C
0.22
D
0.44
AP EAPCET Subjects
EXAM MAP