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1
MHT CET 2021 22th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the energy of an electron in stationary state corresponding to $$\mathrm{n}=2$$ ?

A
$$-1.45 \times 10^{-18} \mathrm{~J}$$
B
$$-0.545 \times 10^{-18} \mathrm{~J}$$
C
$$-3.45 \times 10^{-18} \mathrm{~J}$$
D
$$-2.5 \times 10^{-18} \mathrm{~J}$$
2
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The wavelength of blue light is $$480 \mathrm{~nm}$$. What is frequency of this light?

A
$$4.8 \times 10^9 \mathrm{~Hz}$$
B
$$2.25 \times 10^{14} \mathrm{~Hz}$$
C
$$6.25 \times 10^{14} \mathrm{~Hz}$$
D
$$5.25 \times 10^9 \mathrm{~Hz}$$
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
$$5.6 \times 10^{14} \mathrm{~Hz}$$
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Units & Measurement and Dimensions Vector Algebra Motion Laws of Motion Circular Motion Work, Energy and Power Center of Mass and Collision Rotational Motion Gravitation Simple Harmonic Motion Fluid Mechanics Elasticity Waves Heat and Thermodynamics
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Periodic Table and Periodicity Chemical Bonding and Molecular Structure Metallurgy Hydrogen and It's Compounds s-Block Elements p-Block Elements d and f Block Elements Coordination Compounds Environmental Chemistry
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Straight Lines and Pair of Straight Lines Circle Parabola Ellipse Hyperbola
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