State Einstein’s photoelectric equation and explain how it accounts for the observed features of the photoelectric effect.
Explain Young’s double-slit experiment and derive the condition for constructive and destructive interference.
Describe the electromagnetic spectrum, list its components in order of increasing frequency, and mention one application of each component.
Derive the formula for the average power consumed in a series LCR circuit connected to an AC source. Define power factor and explain its significance.
Using the concept of the magnetic field, derive the expression for the force on a current-carrying conductor placed in a uniform magnetic field.
Derive the formula for the energy stored in a capacitor and explain how it changes when the dielectric is inserted between the plates.
Define resistivity and explain how the resistivity of materials changes with temperature for conductors, semiconductors, and insulators.
State Gauss’s law in electrostatics and apply it to derive an expression for the electric field due to a uniformly charged infinite plane sheet.
Give journal entries to rectify the following errors assuming that suspense
account had been opened.
(a) Goods distributed as free sample ` 5,000 were not recorded in the books.
(b) Goods withdrawn for personal use by the proprietor ` 2,000 were not
recorded in the books.
(c) Bill receivable received from a debtor ` 6,000 was not posted to his
account.
(d) Total of Returns inwards book ` 1,200 was posted to Returns outwards
account.
(e) Discount allowed to Reema ` 700 on receiving cash from her was
recorded in the books as ` 70
Rectify the following errors :
(a) Depreciation provided on machinery ` 4,000 was not posted.
(b) Bad debts written off ` 5,000 were not posted.
(c) Discount allowed to a debtor ` 100 on receiving cash from him was not
posted.
(d) Discount allowed to a debtor ` 100 on receiving cash from him was not
posted to discount account.
(e) Bill receivable for ` 2,000 received from a debtor was not posted.
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