AIPMT 2010 Mains | Geometrical Optics Question 56 | 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 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 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 2008

MCQ (Single Correct Answer)

-1

A boy is trying to start a fire by focusing sunlight on a piece of paper using an equiconvex lens of focal length 10 cm. The diameter of the sun is 1.39 $$ \times $$ 10⁹ m and its mean distance from the earth is 1.5 $$ \times $$ 10¹¹ m. What is the diameter of the sun's image on the paper ?

6.5 $$ \times $$10^$$-$$5 m

12.4 $$ \times $$10^$$-$$4 m

9.2 $$ \times $$10^$$-$$4 m

6.5 $$ \times $$10^$$-$$4 m

PREVIOUS NEXT

NEET Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution