1
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
$$5.25 \times 10^9 \mathrm{~Hz}$$
2
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
3
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
$$5.6 \times 10^{14} \mathrm{~Hz}$$
4
MHT CET 2021 20th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the value of frequency of radiation when transition occurs between two stationary states that differ in energy by $$\Delta \mathrm{E}$$ ?

A
$$v=\frac{2 \pi}{h}$$
B
$$v=\frac{h}{\Delta E}$$
C
$$v=\frac{\Delta E}{h}$$
D
$$v=\frac{h}{2 \pi}$$
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