AIPMT 2011 Prelims | Geometrical Optics Question 56 | Physics

A rays of light is incident on a 60^o prism at the minimum deviation position. The angle of refraction at the first face (i.e., incident face) of the prism is

zero

30^o

45^o

60^o

AIPMT 2010 Mains

MCQ (Single Correct Answer)

-1

The speed of light in media M₁ and M₂ are 1.5 $$ \times $$ 10⁸ m/s and 2.0 $$ \times $$ 10⁸ m/s respectively. A ray of light enters from medium M₁ to M₂ at an incidence angle i. If the rays suffers total internal reflection, the value of i is

Equal to sin^$$-$$1 $$\left( {{2 \over 3}} \right)$$

Equal to or less than sin^$$-$$1$$\left( {{3 \over 5}} \right)$$

Equal to or greater than sin^$$-$$1 $$\left( {{3 \over 4}} \right)$$

Less than sin^$$-$$1$$\left( {{2 \over 3}} \right)$$

AIPMT 2010 Prelims

MCQ (Single Correct Answer)

-1

A lens having focal length f and aperture of diameter d forms an image of intensity I. Aperture of diameter $${d \over 2}$$ in central region of lens is covered by a black paper. Focal length of lens and intensity of image now will be respectively

$$f\,$$ and $${I \over 4}$$

$${{3f} \over 4}$$ and $${I \over 2}$$

$$f$$ and $${{3I} \over 4}$$

$${f \over 2}$$ and $${I \over 2}$$

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