1
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which from following rule / principle states that "No two electrons in an atom can have the same set of four quantum numbers"?

A
Pauli's exclusion principle
B
Hund's rule
C
Aufbau rule
D
Heisenberg uncertainty principle
2
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Calculate the wavenumber of the photon emitted during transition from the orbit of $$n=2$$ to $$n=1$$ in hydrogen atom. $$\left[R_H=109677 \mathrm{~cm}^{-1}\right]$$

A
$$27419.3 \mathrm{~cm}^{-}$$
B
$$109677.0 \mathrm{~cm}^{-1}$$
C
$$12064.5 \mathrm{~cm}^{-1}$$
D
$$82257.8 \mathrm{~cm}^{-1}$$
3
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the wavelength for a wave having frequency 50 Hz?

A
1.6 $$\times$$ 10$$^6$$ m
B
6 $$\times$$ 10$$^{-2}$$ m
C
6 $$\times$$ 10$$^6$$ m
D
15 $$\times$$ 10$$^2$$ m
4
MHT CET 2021 21th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The wavelength of a spectral line of caesium is $$460 \mathrm{~nm}$$. What is the frequency of spectral line?

A
$$4.5 \times 10^8 \mathrm{~Hz}$$
B
$$6.5 \times 10^{14} \mathrm{~Hz}$$
C
$$3 \times 10^9 \mathrm{~Hz}$$
D
$$5.6 \times 10^{14} \mathrm{~Hz}$$
MHT CET Subjects
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEEBITSATMHT CET
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN