Class 10 Science Light Reflection And Refraction? CBSE Questions & Answers

Class 10 · Science Light Reflection And Refraction?

This is Science class 10 Science Light Reflection and Refraction? CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

Match the following with correct response. (1) Convex lens (2) Concave lens (3) Concave mirror (4) Convex mirror (A) Diverging (B) Virtual image smaller than the object (C) Virtual image larger than the object (D) Converging

A
1-C, 2-B, 3-D, 4-A
B
1-B, 2-D, 3-A, 4-C
C
1-A, 2-C, 3-B, 4-D
D
1-D, 2-A, 3-C, 4-B
Correct

Match the following with correct response. (1) Plane mirror (2) Concave lens (3) Convex lens (4) Convex mirror (A) Real image, inverted and large (B) Virtual image, erect and same size (C) Virtual image, positive focal length (D) Virtual image, negative focal length negative power

A
1-B, 2-D, 3-A, 4-C
Correct
B
1-D, 2-A, 3-C, 4-B
C
1-C, 2-B, 3-D, 4-A
D
1-A, 2-C, 3-B, 4-D

Match the following with correct response. (1) Mirror formula (2) Lens formula (3) Magnification (4) Focal length (A) \(\frac{R}{2}\)(B) \(\frac{1}{v} - \frac{1}{u} = \frac{1}{f}\)(C) \(\frac{1}{v} + \frac{1}{u} = \frac{1}{f}\)(D) \( - \frac{v}{u}\)

A
1-B, 2-D, 3-A, 4-C
B
1-A, 2-C, 3-B, 4-D
C
1-D, 2-A, 3-C, 4-B
D
1-C, 2-B, 3-D, 4-A
Correct

Match the following with correct response. (1) Refraction (2) Reflection (3) Rarer medium (4) Denser medium /br>(A) Bending of light (B) Velocity of light increases (C) Bouncing back of light (D) Velocity of light decreases

A
1-B, 2-D, 3-A, 4-C
B
1-A, 2-C, 3-B, 4-D
Correct
C
1-C, 2-B, 3-D, 4-A
D
1-D, 2-A, 3-C, 4-B

Match the following with correct response. (1) When the object is at 20cm (2) When the object is at 5 cm (3) When the object is at 30cm (4) When the object is at 10cm (A) Image formed is magnified and erect (B) Image formed is at infinity(C) Image formed is magnified and inverted (D) Image formed is of same size that of the object

A
1-A, 2-C, 3-B, 4-D
B
1-C, 2-B, 3-D, 4-A
C
1-D, 2-A, 3-C, 4-B
Correct
D
1-B, 2-D, 3-A, 4-C

Match the following with correct response. (1) A perpendicular drawn at the point of incidence to the reflecting surface (2) The rays which strike the mirror surface near the periphery (3) The ratio of the height of the image to the height of the object (4) The ratio of speed of light in vacuum to the speed of light in a medium (A) Linear magnification (B) Normal (C) Absolute refractive index (D) Marginal ray

A
1-D, 2-A, 3-C, 4-B
B
1-A, 2-C, 3-B, 4-D
C
1-B, 2-D, 3-A, 4-C
Correct
D
1-C, 2-B, 3-D, 4-A

Match the following with correct response. (1) Highest refractive index (2) Lowest refractive index (3) Head lights of a car (4) Side rear view of a mirror (A) Convex mirror (B) Ice (C) Diamond (D) Concave mirror

A
1-A, 2-C, 3-B, 4-D
B
1-C, 2-B, 3-D, 4-A
Correct
C
1-B, 2-D, 3-A, 4-C
D
1-D, 2-A, 3-C, 4-B

Match the following with correct response. (1) Pole (2) Principle axis (3) Radius of curare (4) Aperture (A) The midpoint of the reflecting surface of spherical mirror (B) The radius of hollow sphere of which the reflecting surface forms a part (C) The imaginary straight line joining the pole and the centre of curvature (D) The width of the mirror from which reflection can take place

A
1-D, 2-A, 3-C, 4-B
B
1-B, 2-D, 3-A, 4-C
C
1-C, 2-B, 3-D, 4-A
D
1-A, 2-C, 3-B, 4-D
Correct

Match the following with correct response. (1) Concave mirror (2) Convex mirror (3) Focal length (4) Lateral inversion (A) A spherical mirror whose reflecting surface is curved outwards (B) Objects actually to the left appear to be on the right in the image(C) The distance from the Pole ?P? and focal point (D) A spherical mirror whose reflecting surface is curved inwards

A
1-B, 2-D, 3-A, 4-C
B
1-A, 2-C, 3-B, 4-D
C
1-D, 2-A, 3-C, 4-B
Correct
D
1-C, 2-B, 3-D, 4-A

I A real image is inverted II- A virtual image is always erect

A
Both are correct
Correct
B
Both are wrong
C
I is true
D
II is true

When light enters from air to glass, which of the following changes-A. Wavelength B. Velocity C. Frequency D. Amplitude

A
A and D
B
A and C
C
A, B and D
Correct
D
B and C

Which of the following statement is true?A. The speed of all colours is same in air or vacuum B. The speed of all colurs is different in denser media C. Speed of light in air is \(3 \times {10^8}m/s\) D. Refractive index has no unit

A
All of these
Correct
B
A and B
C
B and D
D
A, B and C

According to new Cartesian sign convention for convex lens-A. Distance of the object is negative B. Distance of the real image is negative C. Distance of the virtual image is positiveD. Focal length of the lens is positive

A
A and B
B
All of these
C
A and D
Correct
D
A and C

characteristics of image formed by convex lens are-A. At infinity image is formed at focus \({F_2}\), Real and invested B. At \(2{F_1}\), image is formed at \(2{F_2}\), enlarged, virtual and erect C. Beyond \(2{F_1}\), image is formed at between \({F_2}\) and \(2{F_2}\), Real and invested D. At focus \({F_1}\), image is formed at infinity, Virtual and erect

A
A and B
B
C and D
C
A and C
Correct
D
A, B and C

Which of the following statement is incorrect-A. A ray of light passing from an optically rarer medium to an optically deuser medium, bends away from the normal B. A ray of light passing from an optically deuser medium to an optically rarer medium, bends away from the normal C. A ray of light passing from an optically rarer medium to an optically denser medium, bends toward the normal D. A ray light passing from an optically denser medium to an optically rarer medium, bends towards the normal

A
A and C
B
A and D
C
B and C
Correct
D
A, B and D