ACME ACADEMY

WEEKLY EVALUATION TEST

Subject: Science
Time Limit: 20 Mins
Max Marks: 20 Marks
Student Name:
Roll Number:
Class / Sec:
Date:

GENERAL INSTRUCTIONS:

  1. All questions are compulsory. Carefully read all instructions before starting.
  2. The question paper contains 20 questions.
  3. There is no negative marking for incorrect answers.
  4. Use of mobile phones, smartwatches, or calculators is strictly prohibited during the exam.
1. Which of the following laws of reflection is true?
[1 Mark]
(A) Angle of incidence is greater than angle of reflection.
(B) Angle of incidence is equal to the angle of reflection.
(C) Angle of incidence is less than angle of reflection.
(D) The incident ray, normal, and reflected ray are in different planes.
2. An object is placed at the centre of curvature (C) of a concave mirror. Where is the image formed?
[1 Mark]
(A) At focus (F)
(B) Between F and C
(C) At infinity
(D) At the centre of curvature (C)
3. Which type of mirror is universally used as a rear-view mirror in vehicles?
[1 Mark]
(A) Plane mirror
(B) Concave mirror
(C) Convex mirror
(D) Plano-convex mirror
4. The bending of light as it passes from one transparent medium to another is called:
[1 Mark]
(A) Reflection
(B) Dispersion
(C) Refraction
(D) Scattering
5. If a light ray passes from a rarer medium (like air) to a denser medium (like glass), it bends:
[1 Mark]
(A) Away from the normal
(B) Towards the normal
(C) Parallel to the normal
(D) Does not bend at all
6. What is the SI unit of power of a lens?
[1 Mark]
(A) Metre
(B) Watt
(C) Dioptre
(D) Joule
7. A lens has a power of -2.0 D. What type of lens is it and what is its focal length?
[1 Mark]
(A) Convex lens, +0.5 m
(B) Concave lens, -0.5 m
(C) Convex lens, +2.0 m
(D) Concave lens, -2.0 m
8. The absolute refractive index of any transparent medium is always:
[1 Mark]
(A) Less than 1
(B) Equal to 1
(C) Greater than 1
(D) Zero
9. Snell's Law of refraction relates the angle of incidence to the angle of refraction. It is stated as:
[1 Mark]
(A) sin i / sin r = constant
(B) cos i / cos r = constant
(C) tan i / tan r = constant
(D) sin i * sin r = constant
10. Which lens is thicker at the centre and thinner at the edges, converging light rays passing through it?
[1 Mark]
(A) Concave lens
(B) Convex lens
(C) Plano-concave lens
(D) Cylindrical lens
11. When an object is placed between the optical centre (O) and the focus (F1) of a convex lens, the image formed is:
[1 Mark]
(A) Real, inverted and diminished
(B) Real, inverted and enlarged
(C) Virtual, erect and enlarged
(D) Virtual, erect and diminished
12. The relation between the focal length (f) and radius of curvature (R) of a spherical mirror is:
[1 Mark]
(A) f = R
(B) f = R / 2
(C) f = 2R
(D) f = R^2
13. Magnification (m) produced by a spherical mirror is expressed as the ratio of:
[1 Mark]
(A) Object distance to image distance
(B) Height of object to height of image
(C) Height of image to height of object
(D) Image distance to object distance
14. According to the New Cartesian Sign Convention, the focal length of a concave mirror is taken as:
[1 Mark]
(A) Positive
(B) Negative
(C) Zero
(D) Infinity
15. Which optical phenomenon is responsible for a pencil looking bent when partially immersed in water?
[1 Mark]
(A) Reflection
(B) Refraction
(C) Dispersion
(D) Total Internal Reflection
16. What kind of image does a plane mirror always form?
[1 Mark]
(A) Real and inverted
(B) Real and erect
(C) Virtual and erect
(D) Virtual and inverted
17. Where should an object be placed in front of a convex lens to get a real image of the same size?
[1 Mark]
(A) At focus F1
(B) At infinity
(C) At twice the focal length (2F1)
(D) Between F1 and the optical centre
18. Dentists use which type of mirror to see larger images of the teeth of patients?
[1 Mark]
(A) Plane mirror
(B) Convex mirror
(C) Concave mirror
(D) Parabolic mirror
19. The refractive index of water is 1.33. The speed of light in water will be:
[1 Mark]
(A) 3 x 10^8 m/s
(B) 2.25 x 10^8 m/s
(C) 1.33 x 10^8 m/s
(D) 4 x 10^8 m/s
20. If magnification 'm' has a positive value, what does it indicate about the image?
[1 Mark]
(A) The image is real and inverted.
(B) The image is virtual and erect.
(C) The image is formed at infinity.
(D) The image is highly diminished.
🖨️

Print Configurator

Configure layout, details, and typography options for a professional question paper.

Document Options
← Back to Quiz