1
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

An electron in the hydrogen atom excites from 2nd orbit to 4th orbit then the change in angular momentum of the electron is (Planck's constant $$h=6.64 \times 10^{-34} \mathrm{~J}-\mathrm{s}$$)

A
$$2.11 \times 10^{-34} \mathrm{~J}-\mathrm{s}$$
B
$$1.05 \times 10^{-34} \mathrm{~J}-\mathrm{s}$$
C
$$0.57 \times 10^{-34} \mathrm{~J}-\mathrm{s}$$
D
$$422 \times 10^{-34} \mathrm{~J}-\mathrm{s}$$
2
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Choose the correct statement of the following

A
The nuclear density in general, is independent of mass number A.
B
The radius of nucleus is directly proportional to the mass number of A of the nucleus.
C
The binding energy of a nucleus is inversely proportional to its mass defect.
D
Energy is observed when heavy nuclei undergo transmutation into light nuclei.
3
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A ancient discovery found a sample, where $$75 \%$$ of the original carbon ($$\mathrm{C}^{14}$$) remains. Then the age of the sample is $$\binom{T_{\frac{1}{2}}\left(C^{14}\right)=5730 \text { years, } \ln 0.5=-0.7}{\ln (0.75)=-0.3} $$

A
2300 years
B
2456 years
C
2546 years
D
3456 years
4
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Frequencies in the UHF range normally propagate by means of

A
Space waves
B
Surface waves
C
Ground waves
D
Sky waves
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12