1
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When an element ${ }_{90}^{232} \mathrm{Th}$ decays into ${ }_{82}^{208} \mathrm{~Pb}$, the number of $\alpha$ and $\beta^{-}$particles emitted respectively are

A

4,8

B

8,2

C

6,2

D

6, 4

2
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

During the disintegration of a radioactive nucleus of mass number 208 at rest, two alpha particles each with kinetic energy $E$ are emitted. The total kinetic energy of the emitted alpha particles and the daughter nucleus after the disintegration is

A

$\frac{51 E}{25}$

B

$\frac{51 E}{50}$

C

$\frac{52 E}{25}$

D

$\frac{26 E}{25}$

3
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The current amplification factor of a transistor in common emitter configuration is 80 . If the emitter current is 2.43 mA , then the base current is

A

$15 \mu \mathrm{~A}$

B

$1.5 \mu \mathrm{~A}$

C

$3 \mu \mathrm{~A}$

D

$30 \mu \mathrm{~A}$

4
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The negative feedback in an amplifier

A

increases noise and distortion.

B

reduces noise and distortion.

C

reduces noise and increases distortion.

D

increases noise and reduces distortion.

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