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TEST SERIES (PHYSICS FST)

266493 In YDSE, a mica slit of thickness t and refractive index $μ$ is introduced in the ray from the first source $S$ . By how much distance the fringes pattern will be displaced

\frac{d}{D} (μ - 1) t

\frac{D}{d} (μ - 1) t

\frac{d (μ - 1)}{D}

\frac{D (μ - 1)}{d}

**NCERT-XIIII-265**

TEST SERIES (PHYSICS FST)

266494 A hollow conducting sphere is placed in an electric field produced by a point charge placed at $P$ as shown in the figure. Let $V_{A}, V_{B}, V_{C}$ be the potentials at points A, B and C respectively. Then

1 \(V_A

V_{A} > V_{B} > V_{C}

V_{C} > V_{B} = V_{A}

V_{A} = V_{e} = V_{C}

Explanation:

d
The sphere is a conductor and all three points $A, B$ and $C$ lie on its surface, which is equipotential
$∴ V_{A} = V_{E} = V_{c}$

**NCERT-XII-I48**

TEST SERIES (PHYSICS FST)

266495 Point masses $1, 2, 3$ and 4 kg are lying at the point $(0, 0, 0), (2, 0, 0), (0, 3, 0)$ and $(- 2, - 2, 0)$ respectively. The moment of inertia of this system about x-axis will be

43 kg m^{2}

34 kg m^{2}

27 kg m^{2}

72 kg m^{2}

Explanation:

a
The M.I of system about $x$ -axis
$\begin{aligned} = I_{1} + I_{2} + I_{3} + I_{4} \\ = 0 + 0 + 3 \times (3)^{2} + 4 \times (- 2)^{2} \\ = 27 + 16 = 43 kg - m^{2} \end{aligned}$

**NCERT-XI-I-114**

TEST SERIES (PHYSICS FST)

266496 Assertion : In metre bridge experiment, a high resistance is always connected in series with a galvanometer. Reas on: As resistance increases current through the circuit increases.

1 Assertion is correct, reason is correct; reason is a correct explanation for assertion.

2 Assertion is correct, reason is correct; reason is not a correct explanation for assertion.

3 Assertion is correct, reason is incorrect.

4 Assertion is incorrect, reason is incorrect.

**NCERT-XII-I-81**

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TEST SERIES (PHYSICS FST)

266493 In YDSE, a mica slit of thickness t and refractive index $μ$ is introduced in the ray from the first source $S$ . By how much distance the fringes pattern will be displaced

\frac{d}{D} (μ - 1) t

\frac{D}{d} (μ - 1) t

\frac{d (μ - 1)}{D}

\frac{D (μ - 1)}{d}

**NCERT-XIIII-265**

TEST SERIES (PHYSICS FST)

1 \(V_A

V_{A} > V_{B} > V_{C}

V_{C} > V_{B} = V_{A}

V_{A} = V_{e} = V_{C}

Explanation:

d
The sphere is a conductor and all three points $A, B$ and $C$ lie on its surface, which is equipotential
$∴ V_{A} = V_{E} = V_{c}$

**NCERT-XII-I48**

TEST SERIES (PHYSICS FST)

266495 Point masses $1, 2, 3$ and 4 kg are lying at the point $(0, 0, 0), (2, 0, 0), (0, 3, 0)$ and $(- 2, - 2, 0)$ respectively. The moment of inertia of this system about x-axis will be

43 kg m^{2}

34 kg m^{2}

27 kg m^{2}

72 kg m^{2}

Explanation:

a
The M.I of system about $x$ -axis
$\begin{aligned} = I_{1} + I_{2} + I_{3} + I_{4} \\ = 0 + 0 + 3 \times (3)^{2} + 4 \times (- 2)^{2} \\ = 27 + 16 = 43 kg - m^{2} \end{aligned}$

**NCERT-XI-I-114**

TEST SERIES (PHYSICS FST)

266496 Assertion : In metre bridge experiment, a high resistance is always connected in series with a galvanometer. Reas on: As resistance increases current through the circuit increases.

1 Assertion is correct, reason is correct; reason is a correct explanation for assertion.

2 Assertion is correct, reason is correct; reason is not a correct explanation for assertion.

3 Assertion is correct, reason is incorrect.

4 Assertion is incorrect, reason is incorrect.

**NCERT-XII-I-81**

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TEST SERIES (PHYSICS FST)

266493 In YDSE, a mica slit of thickness t and refractive index $μ$ is introduced in the ray from the first source $S$ . By how much distance the fringes pattern will be displaced

\frac{d}{D} (μ - 1) t

\frac{D}{d} (μ - 1) t

\frac{d (μ - 1)}{D}

\frac{D (μ - 1)}{d}

**NCERT-XIIII-265**

TEST SERIES (PHYSICS FST)

1 \(V_A

V_{A} > V_{B} > V_{C}

V_{C} > V_{B} = V_{A}

V_{A} = V_{e} = V_{C}

Explanation:

d
The sphere is a conductor and all three points $A, B$ and $C$ lie on its surface, which is equipotential
$∴ V_{A} = V_{E} = V_{c}$

**NCERT-XII-I48**

TEST SERIES (PHYSICS FST)

266495 Point masses $1, 2, 3$ and 4 kg are lying at the point $(0, 0, 0), (2, 0, 0), (0, 3, 0)$ and $(- 2, - 2, 0)$ respectively. The moment of inertia of this system about x-axis will be

43 kg m^{2}

34 kg m^{2}

27 kg m^{2}

72 kg m^{2}

Explanation:

a
The M.I of system about $x$ -axis
$\begin{aligned} = I_{1} + I_{2} + I_{3} + I_{4} \\ = 0 + 0 + 3 \times (3)^{2} + 4 \times (- 2)^{2} \\ = 27 + 16 = 43 kg - m^{2} \end{aligned}$

**NCERT-XI-I-114**

TEST SERIES (PHYSICS FST)

266496 Assertion : In metre bridge experiment, a high resistance is always connected in series with a galvanometer. Reas on: As resistance increases current through the circuit increases.

1 Assertion is correct, reason is correct; reason is a correct explanation for assertion.

2 Assertion is correct, reason is correct; reason is not a correct explanation for assertion.

3 Assertion is correct, reason is incorrect.

4 Assertion is incorrect, reason is incorrect.

**NCERT-XII-I-81**

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TEST SERIES (PHYSICS FST)

266493 In YDSE, a mica slit of thickness t and refractive index $μ$ is introduced in the ray from the first source $S$ . By how much distance the fringes pattern will be displaced

\frac{d}{D} (μ - 1) t

\frac{D}{d} (μ - 1) t

\frac{d (μ - 1)}{D}

\frac{D (μ - 1)}{d}

**NCERT-XIIII-265**

TEST SERIES (PHYSICS FST)

1 \(V_A

V_{A} > V_{B} > V_{C}

V_{C} > V_{B} = V_{A}

V_{A} = V_{e} = V_{C}

Explanation:

d
The sphere is a conductor and all three points $A, B$ and $C$ lie on its surface, which is equipotential
$∴ V_{A} = V_{E} = V_{c}$

**NCERT-XII-I48**

TEST SERIES (PHYSICS FST)

266495 Point masses $1, 2, 3$ and 4 kg are lying at the point $(0, 0, 0), (2, 0, 0), (0, 3, 0)$ and $(- 2, - 2, 0)$ respectively. The moment of inertia of this system about x-axis will be

43 kg m^{2}

34 kg m^{2}

27 kg m^{2}

72 kg m^{2}

Explanation:

a
The M.I of system about $x$ -axis
$\begin{aligned} = I_{1} + I_{2} + I_{3} + I_{4} \\ = 0 + 0 + 3 \times (3)^{2} + 4 \times (- 2)^{2} \\ = 27 + 16 = 43 kg - m^{2} \end{aligned}$

**NCERT-XI-I-114**

TEST SERIES (PHYSICS FST)

266496 Assertion : In metre bridge experiment, a high resistance is always connected in series with a galvanometer. Reas on: As resistance increases current through the circuit increases.

1 Assertion is correct, reason is correct; reason is a correct explanation for assertion.

2 Assertion is correct, reason is correct; reason is not a correct explanation for assertion.

3 Assertion is correct, reason is incorrect.

4 Assertion is incorrect, reason is incorrect.

**NCERT-XII-I-81**

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