ISC Physics Answer Key 2024 (Available): Detailed solutions PDF download

(i)

B. Becomes double

(ii)

C. Remains same

(iii)

Option B

(iv)

C. Assertion is true and Reason is false

(v)

D. Violet color is deviated most

(vi)

E. h /√2mE

(vii)

B. holes

(i) In an electric dipole what is the locus of a point having zero potential?

A straight line drawn at the middle of the electric dipole.

(ii) Three identical cells each of emf e are connected in parallel to form a battery. What is the emf of the battery mcq

The total e.m.f of the combination is equal to the e.m.f of one of the cells.

(iii) Three bulbs B1 (230 V, 40 W) B2 (230 V, 60W), and B3 (230 V, 100W) are connected in a series to a 230V supply. Which bulb glows the brightest?

B1 (230 V, 40 W) B

(iv) Explain the meaning of following statement- Curle temperature of soft iron is 770 degree celsius

For iron, this temperature is 770 C, above which Fe begins to transform from BCC to FCC. The low-temperature BCC iron is ferromagnetic.

(v) What type of wavefronts are associated with a point source of light?

Spherical wavefront.

(vi) What is pair production?

Pair production is the creation of a subatomic particle and its antiparticle from a neutral boson.

(vii) In semiconductor physics what is the function of a rectifier

A rectifier is an electronic device which is used to convert two-directional AC current to a single-directional DC current.

ISC Class 12 Physics Question Paper 2024