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

A compound microscope has an objective of focal length 1.25 cm and an eyepiece of focal length 5 cm separated by a distance of 7.5 cm . The total magnification produced by the microscope when the final image forms at infinity is

A

6.25

B

30

C

120

D

72.5

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

The property of light that explains the formation of coloured images due to thick lenses is

A

refraction

B

dispersion

C

reflection

D

total internal reflection

3
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

For an aperture of $5 \times 10^{-3} \mathrm{~m}$ and a monochromatic light of wavelength $\lambda$, the distance for which ray optics becomes a good approximation is 50 m , then $\lambda=$

A

$5000\mathop {\rm{A}}\limits^{\rm{o}}$

B

$6000 \mathop {\rm{A}}\limits^{\rm{o}}$

C

$5400 \mathop {\rm{A}}\limits^{\rm{o}}$

D

$6500 \mathop {\rm{A}}\limits^{\rm{o}}$

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

An electron and a positron enter a uniform electric field $E$ perpendicular to it with equal speeds at the same time. The distance of separation between them in the direction of the field after a time ' $t$ ' is

( $\frac{e}{m}$ is specific charge of electron)

A

$\frac{2 E e t^2}{m}$

B

$\frac{E e t^2}{m}$

C

$\frac{E e t^2}{2 m}$

D

zero

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