CBSE Class 10 Physics MCQs: Previous Year Questions
bySomesh Kumar Satpathy
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Hello students! Welcome to this blog post, where we bring you a collection of CBSE Class 10 Physics MCQ questions from previous year papers. These questions have been carefully extracted to help you understand the exam pattern and improve your preparation. Whether you're looking to revise key concepts or practice for your upcoming exams, this post has got you covered. Stay tuned for valuable insights and tips to ace your Physics exam! Let's dive in!
1. At what distance from a convex lens should an object be placed to get an image of the same size as that of the object on a screen?
(a) Beyond twice the focal length of the lens
(b) At the principal focus of the lens
(c) At twice the focal length of the lens
(d) Between the optical centre of the lens and its principal focus
(c) At twice the focal length of the lens
2. The lens system of human eye forms an image on a light sensitive screen, which is called as:
(a) Cornea
(b) Ciliary muscles
(c) Optic nerves
(d) Retina
(d) Retina
3. The pattern of the magnetic field produced inside a current carrying solenoid is:
(a) Uniform Magnetic Field
4. Strength of magnetic field produced by a current carrying solenoid DOES NOT depend upon:
(A) number of turns in the solenoid
(B) direction of the current flowing through it
(C) radius of solenoid
(D) material of core of the solenoid
(B) direction of the current flowing through it
5. S.I. unit of electrical resistivity is:
(A) ohm per metre³
(B) ohm per metre²
(C) ohm · metre
(D) ohm · metre³
(C) ohm · metre
6. The minimum resistance which can be made using five resistors each of resistance 10 Ω is:
(A) 1/50 Ω
(B) 1/5 Ω
(C) 2 Ω
(D) 1 Ω
(C) 2 Ω
7. Consider the following statements in the context of human eye:
(a) The diameter of the eye ball is about 2.3 cm.
(b) Iris is a dark muscular diaphragm that controls the size of the pupil.
(c) Most of the refraction for the light rays entering the eye occurs at the crystalline lens.
(d) While focusing on the objects at different distances the distance between the crystalline lens and the retina is adjusted by ciliary muscles.
The correct statements are:
(A) (a) and (b)
(B) (a), (b) and (c)
(C) (b), (c) and (d)
(D) (a), (c) and (d)
(A) (a) and (b)
8. In case of four wires of the same material, the resistance will be minimum if the diameter and length of the wire respectively are:
(A) D/2 and L/4
(B) D/4 and 4L
(C) 2D and L
(D) 4D and 2L
(C) 2D and L
9. The phenomena of light involved in the formation of a rainbow in the sky are:
(A) Refraction, dispersion, and reflection
(B) Refraction, dispersion, and total internal reflection
(C) Dispersion, scattering, and reflection
(D) Dispersion, refraction, and internal reflection
(B) Refraction, dispersion, and total internal reflection
10. A rectangular loop ABCD carrying a current I is situated near a straight conductor XY, such that the conductor is parallel to the side AB of the loop and is in the plane of the loop. If a steady current I is established in the conductor as shown, the conductor XY will:
(A) remain stationary.
(B) move towards the side AB of the loop.
(C) move away from the side AB of the loop.
(D) rotate about its axis.
(C) move away from the side AB of the loop.
11. Absolute refractive index of glass and water is 3/2 and 4/3 respectively. If the speed of light in glass is 2 × 10⁸ m/s, the speed of light in water is:
(A) 9/4 × 10⁸ m/s
(B) 5/2 × 10⁸ m/s
(C) 7/3 × 10⁸ m/s
(D) 16/9 × 10⁸ m/s
(A) 9/4 × 10⁸ m/s
12. When a beam of white light passes through a region having very fine dust particles, the colour of light mainly scattered in that region is:
(A) Red
(B) Orange
(C) Blue
(D) Yellow
(C) Blue
13. Consider the following combinations of resistors:
The combinations having equivalent resistance 1 Ω is/are:
(A) I and IV
(B) Only IV
(C) I and II
(D) I, II, and III
(C) I and II
14. An electric iron of resistance 20 Ω draws a current of 5 A. The heat developed in the iron in 30 seconds is:
(A) 15000 J
(B) 6000 J
(C) 1500 J
(D) 3000 J
(A) 15000 J
15. The current carrying device which produces a magnetic field similar to that of a bar magnet is:
(A) A straight conductor
(B) A circular loop
(C) A solenoid
(D) A circular coil
(C) A solenoid
16. How will the image formed by a convex lens be affected, if the upper half of the lens is wrapped with a black paper?
(A) The size of the image formed will be one-half of the size of the image due to complete lens.
(B) The image of upper half of the object will not be formed.
(C) The brightness of the image will reduce.
(D) The lower half of the inverted image will not be formed.
(C) The brightness of the image will reduce.
17. The colour of light for which the refractive index of glass is minimum, is:
