Class 12th Physics

10. WAVE OPTICS( Long Answer Type Question )

10. WAVE OPTICS Q.1. Derive an expression for angular fringe width in Young double-slit experiment. Ans ⇒ Young’s double slit…

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9. RAY OPTICS AND OPTICAL INSTRUMENTS( Long Answer Type Question )

9. RAY OPTICS AND OPTICAL INSTRUMENTS Q.1. What is total internal reflection ? Explain its two applications. Ans ⇒ Total…

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8. ELECTROMAGNETIC WAVES ( Long Answer Type Question )

  Q. 1. What are electromagnetic waves ? Describe their properties. Describe electroma gnetic spectrum. Ans ⇒ Electromagnetic waves :…

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7. ALTERNATING CURRENT ( LONG ANSWER TYPE QUESTION )

  Q.1. Discuss LCR circuit with phaser diagram. Ans ⇒ LCR circuit with phaser diagram : In this circuit inductance…

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6. ELECTROMAGNETIC INDUCTION( LONG ANSWER TYPE QUESTION )

Q.1. (a) Lenz’s law obeys the law of conservation of energy. Explain. (b) Describe construction & working of a.c. generator.…

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5. MAGNETISM AND MATTER( LONG ANSWER TYPE QUESTION )

Q.1. Distinguish among dia, para and ferromagnetic substance. Ans ⇒ S.N Diamagnetic Substances Paramagnetic Substances Ferromagnetic Substances 1. Found in…

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4. MOVING CHARGES AND MAGNETISM ( LONG ANSWER TYPE QUESTION )

  Q.1. State and explain Biot-Savart Law. Find an expression for magnetic induction at a sistance from a straight wire…

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3. CURRENT ELECTRICITY ( LONG ANSWER TYPE QUESTION

Q.1. State Kirchhoff’s rules. Obtain the condition for a balanced wheat stone bridge. Ans ⇒ Kirchhoff’s rules first law :…

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2. ELECTROSTATIC POTENTIAL AND CAPACITANCE ( LONG ANSWER TYPE QUESTION )

Q.1. Find the loss of the electrical potential energy when two charged capactiors are connected in parallel Ans ⇒ Let…

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1. ELECTRIC CHARGES AND FIELDS ( LONG ANSWER TYPE QUESTION )

  Q.1. Calculate electric potential and intensity a point P (r, θ) due to an electric dipole. Ans ⇒ Electric…

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