1
KCET 2020
MCQ (Single Correct Answer)
+1
-0

In the given circuit the peak voltage across $$C, L$$ and $$R$$ are $$30 \mathrm{~V}, 110 \mathrm{~V}$$ and $$60 \mathrm{~V}$$, respectively. The rms value of the applied voltage is

KCET 2020 Physics - Alternating Current Question 3 English

A
100 V
B
200 V
C
70.7 V
D
141 V
2
KCET 2020
MCQ (Single Correct Answer)
+1
-0

The power factor of $$R-L$$ circuit is $$\frac{1}{\sqrt{3}}$$. If the inductive reactance is $$2 \Omega$$. The value of resistance is

A
$$2 \Omega$$
B
$$\sqrt{2} \Omega$$
C
$$0.5 \Omega$$
D
$$\frac{1}{\sqrt{2}} \Omega$$
3
KCET 2020
MCQ (Single Correct Answer)
+1
-0

In the given circuit, the resonant frequency is

KCET 2020 Physics - Alternating Current Question 4 English

A
15.92 Hz
B
159.2 Hz
C
1592 Hz
D
15910 Hz
4
KCET 2020
MCQ (Single Correct Answer)
+1
-0

A light beam of intensity $$20 \mathrm{~W} / \mathrm{cm}^2$$ is incident normally on a perfectly reflecting surface of sides $$25 \mathrm{~cm} \times 15 \mathrm{~cm}$$. The momentum imparted to the surface by the light per second is

A
$$2 \times 10^{-5} \mathrm{~kg}-\mathrm{ms}^{-1}$$
B
$$1 \times 10^{-5} \mathrm{~kg}-\mathrm{ms}^{-1}$$
C
$$5 \times 10^{-5} \mathrm{~kg}-\mathrm{ms}^{-1}$$
D
$$1.2 \times 10^{-5} \mathrm{~kg}-\mathrm{ms}^{-1}$$
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