ICSE Class 10th Physics Answer Key: The answer key for the ICSE Class 10th Physics exam 2025 will be available soon. This answer key will help students check their answers and get an idea of their expected marks. Once it is released, students can compare their responses with the correct answers to assess their performance. Using the answer key also allows students to learn from their mistakes and improve their preparation for upcoming exams.
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Importance of ICSE Class 10th Physics Answer Key 2025:
- Checks Performance- Students can compare their answers with the answer key to see how well they did in the exam.
- Finds Mistakes- It helps students spot errors, understand the correct answers, and learn from their mistakes.
- Reduces Exam Stress- Knowing the right answers gives students confidence and helps them stay calm while waiting for the results.
ICSE Class 10th Physics Answer Key 2025: Key Points
Check below the main highlights for ICSE Class 10th Physics Answer Key 2025:
Feature | Answer Key |
| Exam Date: | March 17, 2025 |
| Board Name: | ICSE Board |
| https://cisce.org/ |
ICSE Class 10th Physics Answer Key 2025
SECTION A (40 Marks)
(Attempt all questions from this Section.)
Choose the correct answers to the questions from the given options.
(Do not copy the questions, write the correct answers only.) [15 Marks]
(i) A body is acted upon by two equal and opposite forces, that are NOT along the same straight line. The body will:
(a) remain stationary
(b) have only rotational motion
(c) have only rectilinear motion
(d) have both rectilinear and rotational motion
(ii) Which among the following is a vector quantity?
(a) work
(b) power
(c) energy
(d) moment of couple
(iii) What is the correct energy transformation during the burning of a candle?
(a) heat → kinetic + potential
(b) heat → chemical + light
(c) chemical → heat + light
(d) mechanical → chemical + heat
(iv) When a ray of light passes from one optical medium to another, which of the following physical quantities does NOT change?
(a) Amplitude of the wave
(b) Frequency of the wave
(c) Wavelength of the wave
(d) Speed of the wave
(v) Which one of the following combinations is the correct ascending order of electromagnetic waves in terms of wavelength?
(a) gamma rays, visible light, microwaves
(b) microwaves, visible light, gamma-rays
(c) gamma-rays, microwaves, visible light
(d) microwaves, gamma-rays, visible light
(vi) For a lever, a graph is plotted with load on the Y-axis and effort on the X-axis. Which of the following represents the slope of the graph?
(a) Mechanical advantage
(b) Velocity ratio
(c) 1 / Velocity ratio
(d) 1 / Mechanical advantage
(vii) For a real image formed by a convex lens, the ratio of I: O = 2: 5, then the object is: (I is the height of the image and O is the height of the object)
(a) between O and F
(b) beyond 2F
(c) at F
(d) between F and 2F
(viii) A ray of light is incident normally on a face of an equilateral prism. The ray gets totally reflected at the second refracting surface. The total deviation produced in the path of the ray is:
(a) 30°
(b) 60°
(c) 90°
(d) 120°
(ix) In a closed circuit containing a bulb and a cell, the electromotive force (ε) and the terminal voltage (V) is related as.
(Given I is current and r is internal resistance.)
(a) V = ε + Ir
(b) V = ε - Ir
(c) V = ε ÷ Ir
(d) V = ε × Ir
(x) A metal piece of mass 5 g has a thermal capacity of 2.5 J K⁻¹. If the mass of the metal is tripled, then its specific heat capacity will be:
(a) 7.5 J g⁻¹ K⁻¹
(b) 2.5 J g⁻¹ K⁻¹
(c) 1.5 J g⁻¹ K⁻¹
(d) 0.5 J g⁻¹ K⁻¹
(xi) Assertion (A): As the level of water in a tall measuring cylinder kept under a running tap rises, the pitch of sound gradually increases.
Reason (R): Frequency of sound is inversely proportional to the length of the water column.
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
(b) Both (A) and (R) are true and (R) is not the correct explanation of (A).
(c) (A) is true but (R) is false.
(d) (A) is false but (R) is true.
(xii) In the given circuits Y and Z, the resistors, R₁ and R₂, are connected in:
(a) Series in both the circuits.
(b) Parallel in both the circuits.
(c) Parallel in Y and series in Z.
(d) Series in Y and parallel in Z.
(xiii) A radioactive element P emits one α-particle and transforms into a new element Q. What will be the position of the element Q in the periodic table?
(a) One group to the left of P.
(b) One group to the right of P.
(c) Two groups to the right of P.
(d) Two groups to the left of P.
(xiv)Each of the substances given below is supplied with the same amount of heat. Which one will attain the highest temperature?
| Substance | Lead | Aluminium | Copper | Iron |
|---|---|---|---|---|
| Specific heat capacity (cal/g°C) | 0.031 | 0.21 | 0.095 | 0.115 |
(a) Aluminium
(b) Copper
(c) Iron
(d) Lead
(xv) The following figure shows a small bar magnet falling freely through a copper ring. For the observer at A, the direction of the induced current will be:
(The diagram shows a bar magnet passing through a copper ring, with observer A positioned at the top.)
(a) Clockwise when the magnet is above and below the ring.
(b) Anticlockwise when the magnet is above and below the ring.
(c) Anticlockwise when the magnet is above the ring and clockwise when the magnet is below the ring.
(d) Clockwise when the magnet is above the ring and anticlockwise when the magnet is below the ring.
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