(A) All mirrors follow the laws of reflection.
(B) The angle between the ray of incidence and the plane surface of the mirror is equal to the angle between the plane surface of mirror and the ray of reflection for plane mirror
(C) the rays coming parallel to the principal axis will go after reflection through the focus of the curved mirror
(D) the rays coming to the pole of a curved mirror making an angle with axis will be reflected making the equal angle with the axis on the other side of the axis.
Choose the correct answer from the options given below:
The question requires us to evaluate statements related to the reflection of light and identify which are correct. Let's break down each statement:
- Statement (A): All mirrors follow the laws of reflection.
This statement is true. The laws of reflection apply universally to all types of mirrors (plane, concave, convex). The law states that the angle of incidence is equal to the angle of reflection, and both the incident ray, the reflected ray, and the normal lie in the same plane. - Statement (B): The angle between the ray of incidence and the plane surface of the mirror is equal to the angle between the plane surface of mirror and the ray of reflection for a plane mirror.
This statement is true for plane mirrors. In the case of a plane mirror, the angle of incidence (between the incident ray and the normal) equals the angle of reflection (between the reflected ray and the normal). Since the plane of the mirror is perpendicular to the normal, the described angles with the plane mirror directly correspond to the laws of reflection. - Statement (C): The rays coming parallel to the principal axis will go after reflection through the focus of the curved mirror.
This statement is true for concave mirrors. Any ray that comes parallel to the principal axis of a concave mirror will reflect through the principal focus of the mirror. This is a fundamental property of concave mirrors. - Statement (D): The rays coming to the pole of a curved mirror making an angle with axis will be reflected making an equal angle with the axis on the other side of the axis.
This statement is true. According to the laws of reflection, when a ray strikes the pole of a mirror, the angle of incidence will be equal to the angle of reflection, so the reflection will obey the law by emerging at the same angle on the other side.
Hence, all the statements (A), (B), (C), and (D) are correct. Therefore, the correct answer is (A), (B), (C) and (D).
Important Questions from Ray Optics and Optical Instruments
A Convex mirror produces the magnification 1/3 and 1/4 when the object is placed at the points P and Q in front of the mirror.
Which of the following statements are correct?
- A. The saturation current is constant with collector plate potential for different frequencies of incident radiation.
- B. The saturation current is different with collector plate potential for different frequencies of incident radiation.
- C. The saturation current is different with collector plate potential for different intensity of incident radiation.
- D. The saturation current is constant with collector plate potential for different intensity of incident radiation.
- E. Below threshold frequency, no photoelectrons are emitted.
Choose the correct answer from the options given below:
For insulators and semiconductors, the resistance decreases with an increase in temperature because:
A ray of light passes through four transparent media with refractive index μ1, μ2, μ3, and μ4 as shown in the figure. The surfaces of all media are parallel. If BC and DE are parallel, we must have:
Light of uniform intensity shines perpendicularly on a totally absorbing surface, fully illuminating the surface. If the area of the surface is decreased, what is the effect on radiation pressure?
