AIPMT 2010 Mains | Geometrical Optics Question 60 | Physics

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 ray of light travelling in a transparent medium of refractive index $$\mu $$, falls on a surface separating the medium from air at an angle of incidence of 45^o. For which of the following value of $$\mu $$ the ray can undergo total internal reflection ?

$$\mu $$ = 1.33

$$\mu $$ = 1.40

$$\mu $$ = 1.50

$$\mu $$ = 1.25

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 $${I \over 2}$$

AIPMT 2008

MCQ (Single Correct Answer)

-1

Two thin lenses of focal lengths f₁ and f₂ are in contact and coaxial. The power of the combination is

$${{{f_1} + {f_2}} \over 2}$$

$${{{f_1} + {f_2}} \over {{f_1}{f_2}}}$$

$$\sqrt {{{{f_1}} \over {{f_2}}}} $$

$$\sqrt {{{{f_2}} \over {{f_1}}}} $$

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