Which of the following statements about electromagnetic waves, sound waves and water waves is/are correct ? 1. They exhibit reflection 2. They carry energy 3. They exert pressure 4. They can travel in vacuum Select the correct answer using the code given below :

Let's examine each statement for electromagnetic waves, sound waves, and water waves: 1. They exhibit reflection: Yes, all three types of waves can be reflected when they encounter a boundary. (e.g., light reflection from a mirror, sound reflection creating an echo, water waves reflecting off a wall). Correct. 2. They carry energy: Yes, all waves are disturbances that transfer energy from one place to another. Correct. 3. They exert pressure: Electromagnetic waves exert radiation pressure. Sound waves are essentially pressure variations in a medium. Water waves exert pressure on objects they encounter. Correct. 4. They can travel in vacuum: Electromagnetic waves (like light, radio waves) can travel through a vacuum. However, sound waves require a material medium (like air, water, or solids) to propagate and cannot travel in a vacuum. Water waves also require water as a medium. Incorrect.Therefore, statements 1, 2, and 3 are correct for all three types of waves, while statement 4 is only correct for electromagnetic waves.