1
TS EAMCET 2022 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following has the largest de-Broglie wavelength?

A

A bullet of mass 0.02 kg moving with speed $1 \mathrm{~km} / \mathrm{s}$

B

A ball of mass 0.06 kg moving with speed $10 \mathrm{~m} / \mathrm{s}$

C

A particle of mass 0.01 kg moving with speed $100 \mathrm{~m} / \mathrm{s}$

D

A ball of mass 0.03 kg moving with speed $1 \mathrm{~m} / \mathrm{s}$

2
TS EAMCET 2022 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The energy of an electron in the fourth excited state of the hydrogen atom is

A

-0.85 eV

B

-1.70 eV

C

0

D

-0.425 eV

3
TS EAMCET 2022 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Estimate the approximate volume of aluminium nucleus $(A=27)$, use $\binom{R_0 \simeq 1.0 \times 10^{-15} \mathrm{~m}}{\pi \simeq 3}$

A

$1 \times 10^{-13}(\mathop {\rm{A}}\limits^{\rm{o}})^3$

B

$1 \times 10^{-10}(\mathop {\rm{A}}\limits^{\rm{o}})^3$

C

$1 \times 10^{-15}(\mathop {\rm{A}}\limits^{\rm{o}})^3$

D

$1 \times 10^{-17}(\mathop {\rm{A}}\limits^{\rm{o}})^3$

4
TS EAMCET 2022 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A $p-n$ junction is fabricated from a semiconductor with band gap of 2.8 eV . what approximate wavelength it cannot detect? [Use, $h=6 \times 10^{-34} \mathrm{~m}^2 \mathrm{~kg} / \mathrm{s}$ ]

A

100 nm

B

200 nm

C

400 nm

D

600 nm

TS EAMCET Papers

All year-wise previous year question papers