Andhra & Telangana Board - Class 9

Physics & Chemistry question bank (Physical Science (భౌతిక రసాయన శాస్త్రం))

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Q1.

వక్రతలాల వద్ద కాంతి వక్రీభవనం (Refraction at Curved Surfaces): 'Matter Around Us' కటక సూత్రం (Lens Formula) ఏది?

(A)

$\frac{1}{f} = \frac{1}{v} - \frac{1}{u}$ and Lens Maker's: $\frac{1}{f} = (n - 1)\left(\frac{1}{R_1} - \frac{1}{R_2}\right)$ ($Matter Around Us$)

(B)

$\frac{{1}}{{f}} = \frac{{1}}{{v}} + \frac{{1}}{{u}}$

(C)

$P = f$ (in meters)

(D)

None of the above

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Q2.

విద్యుత్ ప్రవాహం (Electric Current - SSC Board Exam): 'Matter Around Us' ఓమ్ నియమం (Ohm's Law) ప్రకారం సరైన సంబంధం ఏది?

(A)

$V = I R$, Series: $R = R_1 + R_2$, Parallel: $\frac{1}{R} = \frac{1}{R_1} + \frac{1}{R_2}$ ($Matter Around Us$)

(B)

$V = \frac{{I}}{{R}}$

(C)

Electric power $P = I R^2$

(D)

None of the above

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