Curriculum

Ncert-Class 10 - Science - Physics

Chapter 10 - Light - Reflection and Refraction

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Points to Remember-Class 10 -Science Physics-Chapter 10 - Light - Reflection and Refraction

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SOME ASSOCIATED TERMS -Class 10 -Science- Refraction- Physics-Chapter 10 - Light - Reflection and Refraction

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Practice test-Class 10 -Science- Physics-Chapter 10 - Light - Reflection and Refraction

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Self Assessment-Class 10 -Science- Physics-Chapter 10 - Light - Reflection and Refraction

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Very short answer-Class 10 -Science- Physics-Chapter 10 - Light - Reflection and Refraction

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Short answer-Class 10 -Science- Physics-Chapter 10 - Light - Reflection and Refraction

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Long answer- Class 10 -Science-Physics-Chapter 10 - Light - Reflection and Refraction

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Chapter 11:The Human Eye And The Colourful World

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Points to Remember-Class 10 -Science- Physics-Chapter 11:The Human Eye And The Colourful World

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Practice Test-Class 10 -Science- Physics-Chapter 11:The Human Eye And The Colourful World

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Practice Test 2 - Chapter 11:The Human Eye And The Colourful World

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Self Assessment-Class 10 -Science- Physics-Chapter 11:The Human Eye And The Colourful World

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Very Short Answer-Class 10 -Science Physics-Chapter 11:The Human Eye And The Colourful World

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Long Answer-Class 10 -Science- Physics-Chapter 11:The Human Eye And The Colourful World

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Chapter 12:Electricity

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Points to Remember-Class 10 -Science- Physics-Chapter 12:Electricity

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Practice Test-Class 10 -Science- Physics-Chapter 12:Electricity

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Practice Test - 2 -Chapter 12:Electricity

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Self Assessment-Class 10 -Science- Physics-Chapter 12:Electricity

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Very Short Answer -Class 10 -Science- Physics-Chapter 12:Electricity

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Short Answer -Class 10 -Science- Physics-Chapter 12:Electricity

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Long Answer -Class 10 -Science- Physics-Chapter 12:Electricity

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Chapter13: Magnetic Effects Of Electric Current

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Points to remember -Class 10 -Science- Physics-Chapter13: Magnetic Effects Of Electric Current

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Practice Test-Class 10 -Science- Physics-Chapter13: Magnetic Effects Of Electric Current

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Practice Test - 2-Chapter13: Magnetic Effects Of Electric Current

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Self Assessment- Class 10 -Science-Physics-Chapter13: Magnetic Effects Of Electric Current

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Very Short Answer -Class 10 -Science- Physics-Chapter13: Magnetic Effects Of Electric Current

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Short Answer - Class 10 -Science-Physics-Chapter13: Magnetic Effects Of Electric Current

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Long Answer - Class 10 -Science-Physics-Chapter13: Magnetic Effects Of Electric Current

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Assertion and Reason

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Assertion and reason -Class 10 -Science- Physics

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Case Based Question

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Case Based Question -Class 10 -Science- Physics

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Assertion and reason -Class 10 -Science- Physics

Welcome to your Assertion and Reason -physics class 10

Assertion(A) : The centre of curvature is not a part of the mirror. It lies outside its reflecting surface.

Reason (R) : The reflecting surface of a spherical mirror forms a part of a sphere. This sphere has a centre.

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

Both A and R are true but R is not the correct explanation of A.

A is false but R is true.

None

Assertion(A) : The emergent ray is parallel to the direction of the incident ray.

Reason (R) : The extent of bending of the ray of light at the opposite parallel faces (air- glass interface and glass-air interface) of the rectangular glass slab is equal and opposite.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

None

Assertion(A) : Concave mirrors are used as make-up mirrors.

Reason (R) : When the face is held within the focus of a concave mirror, then a diminished image of the face is seen in the concave mirror.

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

None

Assertion(A): The Sun appears flattened at sunrise and sunset.

Reason (R) : The apparent flattering of the Sun’s disc at sunrise and sunset is due to atmospheric refraction.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

Both A and R are true and R is the correct explanation of A.

None

Assertion(A): On changing the direction of flow of current through a straight conductor, the direction of a magnetic field around the conductor is reversed.

Reason (R) : The direction of magnetic field around a conductor can be given in accordance with left hand thumb rule.

A is false but R is true.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

None

Assertion(A) : The strength of the magnetic field produced at the centre of a current carrying circular coil increases on increasing the current flowing through the coil.

Reason (R) : Magnetic field strength is inversely proportional to the current flowing in the coil.

A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

None

Assertion(A): A normal human eye can clearly see all the objects beyond certain minimum distance.

Reason (R) : The human eye has capacity of adjusting the focal length of eye lens.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is false but R is true.

None

Assertion(A) : A ray of light travelling from a rarer medium to a denser medium slows down and bends away from the normal. When it travels from a denser medium to a rarer medium, it speeds up and bends towards the normal.

Reason (R) : The speed of light is higher in a rarer medium than a denser medium.

A is false but R is true.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

None

Assertion(A): The magnitude of the magnetic field at a point on the axis of a current carrying solenoid is inversely proportional to the current flowing through the solenoid.

Reason (R) : The magnitude of the magnetic field at a point on the axis of a current carrying solenoid is directly proportional to the number of turns per unit length of a solenoid.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

None

10.

Assertion (A) : When the resistances are connected between the same two points, they are said

to be connected in parallel.

Reason (R) : In case the total resistance is to be decreased, then the individual resistances are connected in parallel.

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

Both A and R are true but R is not the correct explanation of A.

A is false but R is true.

None

11.

Assertion(A) : A rainbow is sometimes seen in the sky in rainy season only when observer’s back is towards the Sun.

Reason (R) : Internal reflection in the water droplets cause dispersion and the final rays are in backward direction.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the

A is false but R is true.

A is true but R is false.

None

12.

Assertion (A) : If a graph is plotted between the potential difference and the current flowing,

the graph is a straight line passing through the origin.

Reason (R) : The current is directly proportional to the potential difference.

Both A and R are true and R is the correct explanation of A.

A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

None

13.

Assertion(A) : When the object moves with a velocity 2 m/s, its image in the plane mirror moves with a velocity of 4 m/s.

Reason (R) : The image formed by a plane mirror is as far behind the mirror as the object is in front of it.

Both A and R are true and R is the correct explanation of A.

A is false but R is true.

A is true but R is false.

Both A and R are true but R is not the correct explanation of A.

None

14.

Assertion (A) : Longer wires have greater resistance and the smaller wires have lesser resistance.

Reason (R) : Resistance is inversely proportional to the length of the wire.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

None

15.

Assertion (A) : Alloys are commonly used in electrical heating devices, like electrical iron,

toasters etc.

Reason (R) : Alloys do not oxidise (burn) readily at high temperatures.

Both A and R are true but R is not the correct explanation of A.

A is false but R is true.

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

None

16.

Assertion (A) : A cell is a device which converts chemical energy into electrical energy.

Reason (R) : Cell maintains a constant potential difference between its terminals for a long time.

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

A is false but R is true.

Both A and R are true but R is not the correct explanation of A.

None

17.

Assertion(A): A compass needle is placed near a current carrying wire. The deflection of the compass needle decreases when the magnitude of an electric current in the wire is increased.

Reason (R) : Strength of a magnetic field at a point near the conductor increases on increasing the current.

A is false but R is true.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

None

18.

Assertion(A) : The phenomenon of scattering of light by the colloidal particles gives rise to Tyndall effect.

Reason (R): The colour of the scattered light depends on the size of the scattering particles.

A is false but R is true.

A is true but R is false.

Both A and R are true but R is not the correct explanation of A.

Both A and R are true and R is the correct explanation of A.

None

19.

Assertion(A) : The strength of the magnetic field produced at the centre of a current carrying circular coil increases on increasing the radius of the circular coil.

Reason (R) : Magnetic field strength is inversely proportional to the radius of the circular coil.

Both A and R are true but R is not the correct explanation of A.

A is false but R is true.

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

None

20.

Assertion(A): Hypermetropia is the defect of the eye in which only farther objects are seen.

Reason (R) : Hypermetropia is corrected by using converging lens.

A is false but R is true.

A is true but R is false.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

None

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