AIPMT 2015 Cancelled Paper | Geometrical Optics Question 38 | Physics

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

Two identical thin plano-convex glass lenses (refractive index 1.5) each having radius of curvature of 20 cm are placed with their convex surfaces in contact at the centre. The intervening space is filled with oil of refractive index 1.7. The focal length of the combination is

$$-$$ 50 cm

50 cm

$$-$$ 20 cm

$$-$$ 25 cm

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

The refracting angle of a prism is A, and refractive index of the material of the prism is cot (A/2). The angle of minimum deviation is

90^o $$-$$ A

180^o + 2A

180^o $$-$$ 3A

180^o $$-$$ 2A

AIPMT 2014

MCQ (Single Correct Answer)

-1

The angle of a prism is A. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2 A on the first surface returns back through the same path after suffering reflection at the silvered surface.

The refractive index $$\mu $$, of the prism is

2sinA

2cosA

$${1 \over 2}$$cosA

tanA

AIPMT 2014

MCQ (Single Correct Answer)

-1

If the focal length of objective lens is increased then magnifying power of

microscope will increase but that of telescope decrease.

microscope and telescope both will increase.

microscope and telescope both will decrease.

microscope will decrease but that of telescope will increase.

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