1. A
   Graph a
2. B
   Graph b
3. C
   Graph c
4. D
   Graph d

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1. A
   The frequency of X is less than Y but its pitch is same as Y.
2. B
   The frequency and pitch of X is same as the frequency and pitch of Y.
3. C
   The frequency and pitch of X is less than that of Y.
4. D
   The frequency of X is same as Y but its pitch is higher than Y.

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1. A
   Graph a
2. B
   Graph b
3. C
   Graph c
4. D
   Graph d

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1. A
   0.55 kg
2. B
   0.3 kg
3. C
   0.15 kg
4. D
   0.45 kg

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1. A
   Graph a (g is maximum at the surface and decreases as height h increases)
2. B
   Graph b (g increases with height up to gₑ)
3. C
   Graph c
4. D
   Graph d

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1. A
   S
2. B
   R
3. C
   P
4. D
   Q

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1. A
   12.5 N
2. B
   2.0 N
3. C
   20 N
4. D
   125 N

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1. A
   First law of motion
2. B
   Second law of motion
3. C
   Law of momentum
4. D
   Third law of motion

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1. A
   A force can change the speed of a moving body
2. B
   A force can move a stationary body
3. C
   A force can stop a moving body
4. D
   A force can change the shape of the object

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1. A
   Second law of motion
2. B
   Law of conservation of momentum
3. C
   Third law of motion
4. D
   First law of motion

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1. A
   Change the shape of the object
2. B
   Move a stationary object
3. C
   Stop a moving object
4. D
   Change the size of the object

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1. A
   becomes light
2. B
   changes its Mass
3. C
   changes composition
4. D
   changes its shape

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1. A
   A force can change the speed of a moving body
2. B
   A force can change the shape of the object
3. C
   A force can move a stationary body
4. D
   A force can stop a moving body

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1. A
   $V_1 < V_2 < V_3$
2. B
   $V_1 < V_2 > V_3$
3. C
   $V_1 < V_2 = V_3$
4. D
   $V_1 = V_2 < V_3$

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1. A
   This graph illustrates the non-ohmic law.
2. B
   While plotting this graph, the temperature remains constant.
3. C
   The value of ratio $\frac{V}{I}$ when the potential difference is 0.8 V is not equal to the value of ratio $\frac{V}{I}$ when the potential difference is 1.2 V.
4. D
   All of these

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1. A
   $S_2$, $S_4$, $S_5$ closed
2. B
   $S_1$, $S_2$, $S_3$ are closed
3. C
   $S_1$, $S_3$, $S_5$ are closed
4. D
   $S_2$, $S_3$, $S_4$ closed

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1. A
   All have equal equivalent resistance.
2. B
   Network (iii)
3. C
   Network (i)
4. D
   Network (ii)

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1. A
   $\frac{10}{3}\,\Omega$
2. B
   $4\,\Omega$
3. C
   $5\,\Omega$
4. D
   $10\,\Omega$

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1. A
   I and II
2. B
   I and IV
3. C
   I, II and III
4. D
   Only IV

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1. A
   P and Q
2. B
   P and R
3. C
   Any two points
4. D
   Q and R

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1. A
   Prism with vertex A on the left and base BC vertical on the right (C top, B bottom); the beam strikes the upper slanting face AC and travels downward into the prism.
2. B
   Prism with vertex A on the right and base BC vertical on the left (C top, B bottom); the beam strikes the vertical left face BC horizontally.
3. C
   Prism inverted with apex A pointing down and base BC horizontal at the top (C top-left, B top-right); the beam strikes the left slanting face CA and travels downward into the prism.
4. D
   Prism upright with apex A at the top and base BC horizontal at the bottom (B bottom-left, C bottom-right); the beam strikes the left slanting face AB and travels upward into the prism.

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1. A
   The short-sighted eye, the correction of short-sightedness, the long-sighted eye and the correction of long-sightedness
2. B
   The long-sighted eye, the correction of short-sightedness, the short-sighted eye and the correction of long-sightedness
3. C
   The short-sighted eye, the correction of long-sightedness, the long-sighted eye and the correction of short-sightedness
4. D
   The long-sighted eye, the correction of long-sightedness, the short-sighted eye and the correction of short-sightedness

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1. A
   Figure (ii)
2. B
   Figure (iii)
3. C
   Figure (i)
4. D
   Figure (iv)

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1. A
   $\mu > \sqrt{3}$
2. B
   $\mu > \dfrac{3\sqrt{3}}{2}$
3. C
   $\mu < \dfrac{3\sqrt{3}}{8}$
4. D
   $\mu < \dfrac{3\sqrt{3}}{4}$

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1. A
   Both Statements 1 and 2 are true but Statement 2 is not the correct explanation of Statement 1
2. B
   Statement 1 is true but Statement 2 is false
3. C
   Statement 1 is false but Statement 2 is true
4. D
   Both Statements 1 and 2 are true and Statement 2 is the correct explanation of Statement 1

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