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#1 Class 10 Physics Light - Reflection and Refraction 2026 Short 3M

(a) Write the name of the lens and position of the object in front of it so that a virtual and magnified image is formed. (b) An object is placed perpendicular to the principal axis of a convex lens of focal length 20...

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#2 Class 10 Physics Human Eye and Colourful World 2026 Short 2M

Why is the concave lens used as a corrective lens for a myopic eye ?

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#3 Class 10 Physics Human Eye and Colourful World 2026 Short 2M

How does the focal length of eye lens change as the distance of the object from the eyes is altered ? Explain.

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#4 Class 10 Physics Light - Reflection and Refraction 2026 Short 2M

In the given ray diagram, a ray AO travelling in Medium 1 is refracted at O into Medium 2 along OB, and the refracted ray OB makes an angle of $60^\circ$ WITH THE SURFACE. Use the ray diagram to calculate the angle of...

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#5 Class 10 Physics Light - Reflection and Refraction 2026 Short 2M

In the given ray diagram, a ray AO in Medium 1 strikes the boundary at O making an angle of $30^\circ$ with the surface, and the refracted ray OB makes an angle of $30^\circ$ with the normal N in Medium 2. With the he...

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#6 Class 10 Physics Light - Reflection and Refraction 2026 Short 2M

In the given ray diagram a ray AO travelling in Medium 1 strikes the surface separating Medium 1 and Medium 2 at O, making an angle of $30^\circ$ WITH THE SURFACE, and is refracted along OB into Medium 2. Calculate th...

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#7 Class 10 Physics Magnetic Effects of Electric Current 2026 Long 1M

Assertion (A) : Direction of force exerted on a current-carrying conductor placed in a magnetic field remains same if the directions of both magnetic field and current flowing through the conductor are reversed. Reaso...

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#8 Class 10 Physics Human Eye and Colourful World 2026 Mcq 1M

A thin beam of white light falls on a face of a glass prism and a spectrum is obtained on a screen. Which of the following options is the correct sequence of colours from top to bottom on the screen ?

A. Red, Green, Yellow, Violet, Blue

B. Red, Yellow, Green, Blue, Violet

C. Violet, Blue, Green, Yellow, Red

D. Violet, Red, Green, Yellow, Blue

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#9 Class 10 Physics Light - Reflection and Refraction 2026 Mcq 1M

From the following options choose the one which gives negative magnification greater than one :

A. Concave mirror; Nature of image - real

B. Concave mirror; Nature of image - virtual

C. Convex mirror; Nature of image - real

D. Convex mirror; Nature of image - virtual

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#10 Class 12 Physics Ray Optics and Optical Instruments 2023 Long 5M

(i) Two thin converging lenses of focal lengths $f_1$ and $f_2$ are placed coaxially in contact. Derive the expression for the focal length of the combination. (ii) A beam of coherent light of wavelength 550 nm is inc...

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#11 Class 12 Physics Ray Optics and Optical Instruments 2023 Long 5M

(i) A point object is kept in front of a convex spherical surface of radius of curvature R. Draw the ray diagram to show image formation and derive the relation between object distance (u) and image distance (v) in te...

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#12 Class 12 Physics Electromagnetic Induction 2023 Long 5M

(i) State Lenz's law and explain that it follows the law of conservation of energy. (ii) Write the dimensional formula for self-inductance. The current in a coil changes from 8.0 A to 2.0 A in 0.6 s. If the average em...

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#13 Class 12 Physics Alternating Current 2026 Long 5M

(i) A light bulb and an open coil inductor are connected in series across an ac source of variable frequency. How will the glow of the bulb be affected when: (I) an iron bar is inserted inside the coil, and (II) the f...

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#14 Class 12 Physics Moving Charges and Magnetism 2023 Long 1M

Case Study (Charged particles): Particle 1 (mass $m$, charge $-q$, KE $K_1$) and particle 2 (mass $\frac{m}{2}$, charge $+2q$, KE $K_2$). Q (OR part b): If the momenta of particles 1 and 2 are $p_1$ and $p_2$, then:

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#15 Class 12 Physics Moving Charges and Magnetism 2023 Long 1M

Case Study (Charged particles): Particle 1 (mass $m$, charge $-q$) and particle 2 (mass $\frac{m}{2}$, charge $+2q$) in a magnetic field $B$. Q (OR part a): If the period of revolution for particle 1 is 4 s, then for ...

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#16 Class 12 Physics Moving Charges and Magnetism 2023 Long 1M

Case Study (Charged particles): Particle 1 (charge $-q$) and particle 2 (charge $+2q$) enter the magnetic field $\vec{B}=B_0\hat{k}$ with velocities $\vec{v_1}=v_1\hat{i}$ and $\vec{v_2}=v_2\hat{i}$. Q: Then:

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#17 Class 12 Physics Moving Charges and Magnetism 2023 Long 1M

Case Study (Charged particles): Particle 1 (mass $m$, charge $-q$) and particle 2 (mass $\frac{m}{2}$, charge $+2q$) accelerated through the same $V$, then enter a magnetic field $B$ perpendicular to velocity. Q: The ...

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#18 Class 12 Physics Moving Charges and Magnetism 2023 Long 1M

Case Study (Charged particles): Two charged particles 1 and 2 have masses $m$ and $\frac{m}{2}$ and charges $-q$ and $+2q$ respectively. They are accelerated from rest through the same potential difference $V$, gainin...

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#19 Class 12 Physics Nuclei 2023 Short 3M

Draw a plot showing the variation of potential energy of a pair of nucleons as a function of their separation ($r$). Using this plot, show that the nuclear force is (i) attractive for $r>r_0$, and (ii) repulsive fo...

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#20 Class 12 Physics Nuclei 2023 Short 3M

A deuterium nucleus and an alpha particle approach a target nucleus separately in head-on position. Find the ratio of their distances of closest approach to the nucleus when both have (a) the same velocity, and (b) th...

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