Question 1 of 20

Physics

1. The index of refraction depends upon:

1.The object distance

2.The focal length

3.The image distance

4.The speed of light

Question 1 of 20

Question 2 of 20

2. A converging mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance?

1.0.5 cm

2.20 cm

3.15 cm

4.7.5 cm

Question 2 of 20

Question 3 of 20

3. Focal length of a concave lens is:

1.Smaller

2.Greater

3.Negative

4.Positive

Question 3 of 20

Question 4 of 20

4. If a ray of light in glass in incident on an air surface at an angle greater than the critical angle, the ray will:

1.Partially reflected and partially transmitted

2.Totally reflected

3.Be absorbed

4.Totally transmitted

Question 4 of 20

Question 5 of 20

5. Image formed on a camera is:

1.Virtual, upright and magnified

2.Virtual, upright and diminished

3.Real, inverted and diminished

4.Real, inverted and magnified

Question 5 of 20

Question 6 of 20

6. If the outer curved surface of a mirror is reflecting, then it is called:

1.Plane mirror

2.Concave mirror

3.Spherical mirror

4.Convex

Question 6 of 20

Question 7 of 20

7. The distance between principal focus of a convex mirror and its pole is called:

1.Virtual focus

2.Principal axis

3.Radius

4.Focal length

Question 7 of 20

Question 8 of 20

8. Which type of image is formed by a concave lens on a screen?

1.Upright and virtual

2.Upright and real

3.Inverted and virtual

4.Inverted and real

Question 8 of 20

Question 9 of 20

9. Which of the following quantities is not changed during refraction of light?

1.Its direction

2.Its frequency

3.Its speed

4.Its wavelength

Question 9 of 20

Question 10 of 20

10. An object is 14 cm in front of a convex mirror. The image is 5.8 cm behind the mirror. What is the focal length of the mirror?

1.4.1 cm

2.8.2 cm

3.9.9 cm

4.20 cm

Question 10 of 20

Question 11 of 20

11. The ratio of the height of the image to an object is called:

1.Mirage

2.Magnification

3.Imagination

4.Mirror

Question 11 of 20

Question 12 of 20

12. Focal length of the concave mirror is:

1.Negative

2.Positive

3.Greater

4.Smaller

Question 12 of 20

Question 13 of 20

13. An object is placed at the center of curvature of a concave mirror. This image produced by the mirror is located:

1.Between the center of curvature and the focal point

2.Beyond the center of curvature

3.At the focal point

4.Center of curvature

Question 13 of 20

Question 14 of 20

14. The focal length of a spherical mirror is:

1.2R

2.None of these

3.R

4.R/2

Question 14 of 20

Question 15 of 20

15. The principal focus of a concave mirror is real because:

1.None of these

2.The reflected rays do not pass through it

3.The reflected rays actually pass through it

4.Prism has been placed before principal focus

Question 15 of 20

Question 16 of 20

16. If a ray of light in glass is incident on an air surface at an angle greater than the critical angle, the ray will:

1.Diffract only

2.Refract only

3.Reflect only

4.Partially refract and partially reflect

Question 16 of 20

Question 17 of 20

17. If the image is virtual, then its distance from lens is taken:

1.Half

2.Positive

3.Negative

4.Double

Question 17 of 20

Question 18 of 20

18. Diameter of a spherical mirror is called:

1.Radius of curvature

2.Focal length

3.Center of curvature

4.Aperture

Question 18 of 20

Question 19 of 20

19. Linear magnification:

1.Is the ratio of the distance of object and image from the focal point

2.Is the ration of the distance of the image and object from the mirror

3.Is the ration of the distance of object to image distance from mirror

4.Is the ration of the distance of image from object and the distance of object from the mirror

Question 19 of 20

Question 20 of 20

20. Which type of image is produced by the converging lens of human eye if it views a distant object?

1.Virtual, inverted, magnified

2.Virtual, erect, diminished

3.Real, inverted, diminished

4.Real, erect, same size

Question 20 of 20

Test By Subject	Punjab
Test By Topics	10th Class Physics

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Punjab 10th Class Physics Chapter 3 Geometrical Optics Mcqs Test Online

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Punjab 10th Class Physics Chapter 3 Geometrical Optics Mcqs Test Online

Punjab 10th Class Physics Chapter 3 Geometrical Optics Mcqs Test Online

Physics

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