How many questions are in this CBSE Class 12 Physics Part-II practice test?

This CBSE Class 12 Physics Part-II practice test contains 30 carefully selected questions covering all important topics.

What is the time duration for this practice test?

You have 30 minutes to complete this practice test, which matches the actual exam timing.

Is there negative marking in this practice test?

Yes, this practice test follows negative marking scheme similar to the actual exam with 0.25 marks deducted for wrong answers.

Will I get detailed solutions after completing the test?

Yes, you will receive detailed explanations and solutions for all questions immediately after submitting your test.

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Practice Tests
CBSE Class 12 Physics Part-II

CBSE Class 12 Physics Part-II

Detailed mock test covering Waves, Ray Optics, and Modern Physics. Includes complex problem-solving, experimental analysis, and contemporary physics applications.

Author: Pavan

CBSE Class 12 Physics Part 2 K-12 mocktest

Duration

30 minutes

Total Questions

Marking

Negative Marking

Test Questions

What is the speed of light in vacuum?

A. 3 × 10^8 m/s B. 2.99792458 × 10^8 m/s C. 3 × 10^9 m/s D. 1.5 × 10^8 m/s

Which of the following is true about the reflection of light?

A. The angle of incidence is always greater than the angle of reflection. B. The incident ray, reflected ray, and the normal lie in the same plane. C. The angle of reflection is less than the angle of incidence. D. The incident ray is perpendicular to the surface.

What is the relation between the focal length and the radius of curvature of a spherical mirror?

A. f = R/2 B. f = 2R C. f = R D. f = R/3

According to Snell’s law, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. What is this constant called?

A. Refractive index B. Critical angle C. Angle of deviation D. Reflective index

What phenomenon occurs when light travels from a denser medium to a rarer medium at an angle greater than the critical angle?

A. Reflection B. Refraction C. Total internal reflection D. Dispersion

What is the focal length of a concave mirror with a radius of curvature of 10 cm?

A. 5 cm B. 10 cm C. 15 cm D. 20 cm

Which of the following is the correct equation for the mirror equation?

A. 1/f = 1/v + 1/u B. f = v + u C. f = v - u D. 1/f = 1/v - 1/u

What is the magnification formula for a mirror?

A. m = v/u B. m = h/h' C. m = -v/u D. m = u/v

In total internal reflection, which condition is necessary?

A. The angle of incidence must be less than the critical angle. B. The angle of incidence must be greater than the critical angle. C. The incident ray must be perpendicular to the surface. D. The refractive index of the first medium must be less than the second medium.

Which optical phenomenon is responsible for the formation of rainbows?

A. Reflection B. Refraction C. Dispersion D. Diffraction

What is the formula for calculating the refractive index between two media?

A. n = sin i / sin r B. n = tan i / tan r C. n = cos i / cos r D. n = sin r / sin i

What is the purpose of an optical fiber?

A. To transmit light through total internal reflection B. To bend light at sharp angles C. To reflect light back to its source D. To absorb light for energy storage

What is the power of a lens with a focal length of 0.5 m?

A. 2 dioptres B. 1 dioptre C. 0.5 dioptre D. 5 dioptres

What is the refractive index of diamond?

A. 1.33 B. 1.52 C. 1.62 D. 2.42

What happens when the object distance is less than the focal length in a convex lens?

A. The image is real B. The image is inverted C. The image is virtual D. The image is at infinity

What is the magnification formula for a simple microscope?

A. m = 1 + (D/f) B. m = D/f C. m = f/D D. m = f+D

What is the focal length of a concave mirror with a radius of curvature of 15 cm?

A. 7.5 cm B. 15 cm C. 30 cm D. 60 cm

What is the function of the eyepiece in a microscope?

A. To focus light on the object B. To magnify the image formed by the objective lens C. To increase the brightness of the image D. To adjust the focus of the object

Which of the following is true about the image formed by a convex mirror?

A. The image is real and diminished B. The image is virtual and magnified C. The image is virtual and diminished D. The image is real and magnified

What is the formula for the power of a lens?

A. P = 1/f B. P = f/1 C. P = 1/f^2 D. P = 1/v

What does Snell's law describe?

A. The relationship between the angles of incidence and refraction B. The reflection of light from a surface C. The amount of light absorbed by a medium D. The speed of light in different media

What happens when the angle of incidence exceeds the critical angle for total internal reflection?

A. Light refracts into the second medium B. Total internal reflection occurs C. The light is absorbed D. The light bends towards the normal

In the context of refraction, what is the refractive index of air?

A. 1.0 B. 1.33 C. 1.52 D. 1.62

What is the formula for magnification in a simple microscope?

A. m = 1 + (D/f) B. m = D/f C. m = f/D D. m = f+D

What is the refractive index of diamond?

A. 1.33 B. 1.52 C. 1.62 D. 2.42

What happens when light passes through a prism?

A. The light is reflected B. The light bends towards the base of the prism C. The light undergoes total internal reflection D. The light is absorbed

What is the magnifying power of a compound microscope?

A. The ratio of the focal lengths of the objective and eyepiece B. The sum of the focal lengths of the objective and eyepiece C. The product of the magnifications produced by the objective and eyepiece D. The ratio of the image size to the object size

What is the power of a lens with a focal length of 1.5 meters?

A. 0.67 dioptres B. 1.5 dioptres C. 1.0 dioptres D. 2.0 dioptres

Which type of image is formed by a convex mirror?

A. Real and inverted B. Real and erect C. Virtual and erect D. Virtual and inverted

Which optical device uses total internal reflection to transmit light?

A. Optical fiber B. Prism C. Concave mirror D. Convex lens

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CBSE Class 12 Physics Part-II

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