1
KCET 2023
MCQ (Single Correct Answer)
+1
-0

Total impedance of a series $$L$$-$$C$$-$$R$$ circuit varies with angular frequency of the $$\mathrm{AC}$$ source connected to it as shown in the graph. The quality factor $$Q$$ of the series $$L$$-$$C$$-$$R$$ circuit is

KCET 2023 Physics - Alternating Current Question 14 English

A
0.4
B
2.5
C
5
D
1
2
KCET 2023
MCQ (Single Correct Answer)
+1
-0

The ratio of the magnitudes of electric field to the magnetic field of an electromagnetic wave is of the order of

A
10$$^{-8}$$ ms$$^{-1}$$
B
10$$^{5}$$ ms$$^{-1}$$
C
10$$^{-5}$$ ms$$^{-1}$$
D
10$$^{8}$$ ms$$^{-1}$$
3
KCET 2023
MCQ (Single Correct Answer)
+1
-0

A 60 W source emits monochromatic light of wavelength 662.5 nm. The number of photons emitted per second is

A
$$5\times10^{17}$$
B
$$2\times10^{20}$$
C
$$5\times10^{26}$$
D
$$2\times10^{29}$$
4
KCET 2023
MCQ (Single Correct Answer)
+1
-0

In an experiment to study photoelectric effect the observed variation of stopping potential with frequency of incident radiation is as shown in the figure. The slope and $$y$$-intercept are respectively

KCET 2023 Physics - Dual Nature of Radiation Question 14 English

A
$$\frac{h}{e},-\frac{h v_0}{e}$$
B
$$\frac{h v}{e}, v_0$$
C
$$\frac{h v}{e},-\frac{h}{e}$$
D
$$h v_1-h v_0$$
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