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#1 Class 10 Science Light - Reflection and Refraction 2026 Long 4M CBSE

The variation of image distance ($v$) with the object distance ($u$) for a convex lens is given in the following observation table. Analyse it and answer the questions given below : S.No. Object distance ($u$) cm Imag...

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#2 Class 10 Science Electricity 2026 Short 3M CBSE

(a) Name a device which is used to : (i) Maintain a constant potential difference in a circuit. (ii) Change the electric current in an electric circuit. (b) When the potential difference between the terminals of an el...

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#3 Class 10 Science Electricity 2026 Short 3M CBSE

(a) State Ohm's law and justify that V - I graph for Ohm's law will always be a straight line passing through the origin. (b) [Figure: V-I graphs for two wires A and B; both are straight lines through the origin, the ...

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#4 Class 10 Science 2026 Short 3M CBSE

[Figure: An eye receiving parallel rays from a nearby object at O; the near point of the defective eye has shifted from O to a farther point O' (shown by dotted lines). The rays converge at a point behind the retina.]...

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#5 Class 10 Science 2026 Short 3M CBSE

[Figure: An eye with rays coming from a point N' (the far point) being converged by the eye lens to a point IN FRONT OF the retina; N is a farther point which the eye cannot see clearly.] Study the given diagram and a...

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#6 Class 10 Science Electricity 2026 Short 3M CBSE

[Figure: A circuit with a 10 V battery. Between points R and S, a $4\,\Omega$ and a $1\,\Omega$ resistor are joined in series, and this combination is connected in parallel with a $5\,\Omega$ resistor. Between points ...

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#7 Class 10 Science Light - Reflection and Refraction 2026 Short 2M CBSE

Redraw the following ray diagrams in your answer book and show the path of reflected/refracted ray : (i) [Figure: A concave mirror with pole P, focus F and centre of curvature C. A ray of light parallel to the princip...

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#8 Class 10 Science 2026 Short 2M CBSE

Attempt either (a) or (b) : (a) What happens when light is scattered from (i) very fine particles and (ii) very large size particles of medium ? Justify your answer in each case. OR (b) With the help of a ray diagram,...

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#9 Class 10 Science Light - Reflection and Refraction 2026 Short 2M CBSE

[Figure: A ray of light travelling in medium A strikes the boundary between the two media and passes into medium B. NN' is the normal drawn at the point of incidence; the ray in medium B makes a larger angle with the ...

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#10 Class 10 Science Light - Reflection and Refraction 2026 Short 2M CBSE

Draw the ray diagram showing refraction through a glass slab and write the relation between angle of incidence, angle of refraction and refractive index of glass.

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#11 Class 10 Science Magnetic Effects of Electric Current 2026 Long 1M CBSE

Assertion (A) : The needle of a compass, kept in an external magnetic field, always aligns itself in the North-South direction of the Earth. Reason (R) : The behaviour of the needle of the compass is similar to the be...

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#12 Class 10 Science Electricity 2026 Mcq 1M CBSE

In an electric circuit carrying current $I$, a $2\,\Omega$ resistor is replaced by an $8\,\Omega$ resistor without changing the connected (ideal) battery. Then :

A. current becomes $\frac{I}{4}$ and potential difference $\frac{V}{4}$

B. current becomes $\frac{I}{4}$ and potential difference remains $V$

C. current becomes $4I$ and potential difference remains $V$

D. current becomes $4I$ and potential difference $\frac{V}{4}$

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#13 Class 10 Science 2026 Mcq 1M CBSE

[Figure: A ray of white light incident on face AB of a glass prism ABC. Two rays 1 and 2 emerge from face AC, ray 1 being the less deviated (upper) ray and ray 2 the more deviated (lower) ray.] Observe the given ray d...

A. Blue / Red

B. Green / Yellow

C. Red / Violet

D. Violet / Red

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#14 Class 10 Science 2026 Mcq 1M CBSE

Vision defect far-sightedness is found in the eye defects named as :

A. Myopia and cataract

B. Myopia and hypermetropia

C. Presbyopia and hypermetropia

D. Presbyopia and myopia

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#15 Class 10 Science Electricity 2026 Mcq 1M CBSE

The correct way to connect an ammeter and a voltmeter in an electric circuit is :

A. Ammeter in parallel and voltmeter in series

B. Ammeter and voltmeter both in parallel

C. Ammeter in series and voltmeter in parallel

D. Ammeter and voltmeter both in series

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#16 Class 10 Science How do Organisms Reproduce? 2026 Long 5M CBSE

Radha has three children. She does not want to have more children. Radha visits a nearby hospital, to know the methods to prevent pregnancy. (i) Mention the name of any two ways other than the surgical methods, follow...

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#17 Class 10 Science How do Organisms Reproduce? 2026 Long 5M CBSE

Radha has three children. She does not want to have more children. Radha visits a nearby hospital, to know the methods to prevent pregnancy. (i) Mention the name of any two ways other than the surgical methods, follow...

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#18 Class 10 Science How do Organisms Reproduce? 2026 Long 5M CBSE

(i) Name an organ that helps in the formation of male germ cells in humans and also mention the condition that favours the formation of male germ cells. (ii) In male reproductive system, write the pathway followed to ...

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#19 Class 10 Science Control and Coordination 2026 Long 4M CBSE

Read the following passage and answer the questions that follow : A middle-aged person is facing some cognitive changes in himself. His early symptoms included mild forgetfulness. For example, forgetting where he left...

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#20 Class 10 Science Control and Coordination 2026 Long 4M CBSE

Read the following passage and answer the questions that follow : A middle-aged person is facing some cognitive changes in himself. His early symptoms included mild forgetfulness. For example, forgetting where he left...

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