Question

# Hello Mam/Sir, Can u plez provide me MCQ'S of Science CH Light Reflection and Refraction  Thank you

Solution

## The speed of light is_______ in vacuum. 3 x 105 m/s  3 x 108 m/s  3 x 108 km/s  3 x 106 m/s  The wavelength of the visible light is ________. 4 x 10(-7) to 8 x 10(-7) m  4 x 107 to 8 x 107 m  4 x 10(-7) to 8 x 10(-7) Å  4 x 107 to 8 x 107 Å  We can see objects because of_______ reflection  refraction  transmission  diffraction The image formed by a convex mirror is always________ real  enlarged virtual and enlarged  diminished As you move an object away from a convex mirror, its image becomes_____ and moves towards______ smaller, infinity  smaller, focus enlarged, infinity  enlarged, focus For a spherical mirror, ______ is true. f = 2R  R = 2f fR = 2  fR = 1/2 The mirror formula is ________. 1/u - 1/v = 1/f  1/f + 1/u = 1/v f = uv/(u+v)  f = (u+v)/uv For a plane mirror, magnification (m)=________ 0  1 ± 1  ≤ 0 Magnification for convex mirror is ________. always positive  always negative sometimes positive  1 The image formed by a concave lens is ________. always real and enlarged  always real and diminished always virtual and enlarged  always virtual and diminished The lens formula is ________. 1/f = 1/u + 1/v  1/f = 1/u - 1/v 1/f = 1/v - 1/u  1/f + 1/v = u 1 diopter = ________. 1 m  1 m(-1) 1 cm  1 cm(-1) Which of the following is a true statement? The power of a lens is always positive.  The power of a lens is always negative. The power of a convex lens is positive.  The power of a concave lens is positive. Image formed by a concave mirror is erect and enlarged.What is the position of the object? Between focus F and the center of curvature  At the center of curvature Beyond the center of curvature  Between pole and the focus If the focal length of a spherical mirror is 40 cm, then its radius of curvature is _______ cm. 80  20 10  5 The velocity of light in vacuum is _______ ms(-1) 3 x 106  3 x 108 3 x 10 12  3 x 1015 If the angle of incidence, θi = 0°, the angle of reflection, θr = ________. 0°  90° 180°  45° No matter how far is the object from the mirror, the image of the object appears erect. The mirror is ________. concave  convex either concave or convex  none of these A boy is standing at a distance of 2 m in front of a plane mirror.The distance between the boy and his image is ________ m. 4  3 2  1 The image formed by a concave mirror is real, inverted and of the same size as that of the object.The position of the object should be ________. beyond the center of curvature of mirror  between the center of curvature and the focus at the center of curvature of the mirror  at the focus Which of the following has the highest refractive index? Glass  Water Pearl  Diamond Absolute refractive index of any medium is always _______. 1  > 1 < 1  0 The image formed by a plane mirror is ______. real  diminished enlarged  laterally inverted The incident ray passing through the focus(F) of a mirror ______ after reflection. passes through C  passes through F becomes parallel to the principal axis  passes through the pole The incident ray passing through the center of curvature(C) of a mirror ______ after reflection. passes through C  passes through F passes through the pole  becomes parallel to the principal axis The incident ray parallel to the principal axis of a mirror ______ after reflection. passes through C  passes through F passes through the pole  reverts back in the opposite direction According to the sign convention, the distance of object... is always positive  is always negative may be positive or negative  is equal to object height According to the sign convention, the distance of image... is always positive  is always negative may be positive or negative  is equal to image height The refractive index of a denser medium with respect to a rarer medium is... 1  greater than 1 smaller than 1  negative The refractive index of a rarer medium with respect to a denser medium is... 1  greater than 1 smaller than 1  negative Total internal reflection will occur if the angle of reflection is... 45°  60° 90°  99° Magnification for ______ image is always ______. real, positive  real, negative virtual, negative  any, negative If magnification is +1.5, the image is______. erect diminished real inverted   (1) B (2) A (3) A (4) D (5) B (6) B (7) C (8) B (9) A (10) D (11) C (12) B (13) C (14) D (15) A (16) B (17) A (18) B (19) A (20) C (21) D (22) B (23) D (24) C (25) A (26) B (27) B (28) C (29) B (30) C (31) D (32) B (33) A

Suggest corrections