CBSE 12 Physics Question Paper-2022 Set-5 by Pavan | Practice Test to Test Your Knowledge
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  2. Practice Tests
  3. CBSE 12 Physics Question Paper-2022 Set-5
CBSE 12 Physics Question Paper-2022 Set-5

CBSE 12 Physics Question Paper-2022 Set-5

This mock test includes actual CBSE Class 12 Physics board exam questions from the year 2022 Set-1, helping students understand exam trends and practice real paper format

2025-08-14
Pavan Pavan
CBSE Class 12 Physics 2022 Grade 12

Duration

30 min

Questions

30

Marking

Negative

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Questions Preview

What is the function of the objective lens in a compound microscope?

A
To produce a real and diminished image.
B
To produce a virtual and erect image.
C
To produce a real and magnified image.
D
To produce a virtual and diminished image.

If a compound microscope's objective focal length is increased, what happens to the magnifying power?

A
Increases
B
Decreases
C
Remains the same
D
Becomes zero

In a compound microscope, where must the object be placed with respect to the objective lens to form a real image?

A
At the focal point.
B
Between the focal point and the lens.
C
Beyond the focal point.
D
At the center of curvature.

What type of lenses are used for both the objective and eyepiece of a standard compound microscope?

A
Concave lens for objective and convex lens for eyepiece.
B
Both are concave lenses.
C
Convex lens for objective and concave lens for eyepiece.
D
Both are convex lenses.

What is the magnifying power of a compound microscope if the objective has a magnification of 10X and the eyepiece has a magnification of 50X?

A
5X
B
60X
C
500X
D
40X

Which of the following is true about the intermediate image formed by the objective lens of a compound microscope?

A
It is real, inverted, and smaller than the object.
B
It is virtual, erect, and magnified.
C
It is real, erect, and magnified.
D
It is real, inverted, and magnified.

How does the aperture of the objective lens affect the resolving power of a microscope?

A
Decreasing the aperture increases the resolving power.
B
Increasing the aperture increases the resolving power.
C
The aperture has no effect on resolving power.
D
Resolving power is inversely proportional to the square of the aperture.

The length of a compound microscope tube is defined as the distance between:

A
The objective's focal point and the eyepiece's focal point.
B
The objective lens and the eyepiece lens.
C
The object and the final image.
D
The objective lens and the object.

What is the formula for the magnifying power of a compound microscope when the final image is at the least distance of distinct vision (D)?

A
M = (L/f₀) * (1 + D/fₑ)
B
M = (L/f₀) + (1 + D/fₑ)
C
M = (f₀/L) * (1 + D/fₑ)
D
M = (f₀/L) + (1 + D/fₑ)

What is the condition for obtaining a virtual image with a simple microscope (magnifying glass)?

A
The object must be placed beyond the focal length.
B
The object must be placed at the focal length.
C
The object must be placed inside the focal length.
D
The object must be at the center of curvature.

Coherent sources of light are those that produce waves of:

A
The same intensity but different wavelengths.
B
The same frequency, wavelength, and a constant phase difference.
C
The same amplitude and frequency but variable phase difference.
D
Different frequencies and a constant phase difference.

In a Young's double-slit experiment, if the distance between the slits is halved, what happens to the fringe width?

A
It is halved.
B
It is doubled.
C
It remains the same.
D
It is quadrupled.

What is the condition for destructive interference in terms of path difference (Δx)?

A
Δx = nλ
B
Δx = (2n + 1)λ/2
C
Δx = nλ/2
D
Δx = 2nλ

What happens to the interference pattern if the entire Young's double-slit experiment setup is submerged in water?

A
The fringe width increases.
B
The fringe width decreases.
C
The fringe width remains the same.
D
The pattern disappears.

The two slits in Young's experiment are illuminated by two independent sources. What would be the effect on the interference pattern?

A
A sharp interference pattern is obtained.
B
The fringes become blurred and shift.
C
The fringes become wider.
D
No interference pattern will be observed.

What is the phase difference between two waves that undergo constructive interference?

A
π
B
π/2
C
2π
D
3π/2

In Young's experiment, the ratio of maximum to minimum intensity in the interference pattern is 16:1. What is the ratio of the amplitudes of the two interfering waves?

A
4:1
B
5:3
C
3:5
D
16:1

What is the fringe width in Young's double-slit experiment?

A
The distance between two consecutive bright fringes.
B
The distance between a bright and a dark fringe.
C
The width of the central maximum.
D
The distance from the central maximum to the first bright fringe.

What is the name of the phenomenon that causes light to spread out after passing through a small aperture?

A
Interference
B
Polarization
C
Diffraction
D
Refraction

In a single-slit diffraction pattern, what is the width of the central maximum compared to the other maxima?

A
Half the width.
B
Same width.
C
Twice the width.
D
Four times the width.

What is the primary difference between interference and diffraction?

A
Interference is due to two sources, while diffraction is due to a single source.
B
Diffraction is due to two sources, while interference is due to a single source.
C
Both are the same phenomenon.
D
Interference occurs for sound waves, and diffraction for light waves.

Which of the following colors has the longest wavelength in the visible spectrum?

A
Blue
B
Violet
C
Green
D
Red

In Young's double-slit experiment, if monochromatic light is replaced by white light, what will be the effect on the interference pattern?

A
The pattern remains the same.
B
The central fringe is white, and colored fringes appear on either side.
C
The pattern becomes completely dark.
D
Only the central fringe remains, and all others disappear.

What is the relationship between magnifying power (M) and the length of the microscope tube (L) for a compound microscope?

A
M is independent of L.
B
M ∝ L
C
M ∝ 1/L
D
M ∝ L²

What is the primary function of the eyepiece in a compound microscope?

A
To collect light from the object.
B
To magnify the intermediate image formed by the objective.
C
To produce a real image of the object.
D
To focus light onto the object.

When does the maximum number of fringes appear on the screen in Young's double-slit experiment?

A
When the wavelength of light is increased.
B
When the distance between the slits is decreased.
C
When the distance between the slits and the screen is increased.
D
When the wavelength of light is decreased.

The phenomenon of light bending around corners is known as:

A
Interference
B
Reflection
C
Refraction
D
Diffraction

If the wavelength of light used in a Young's double-slit experiment is increased, what happens to the spacing between the fringes?

A
Increases
B
Decreases
C
Remains the same
D
Disappears

Which of the following statements is true about the central fringe in a single-slit diffraction pattern?

A
It is always dark.
B
It has the lowest intensity.
C
It is the brightest and widest fringe.
D
It is of the same width as the other bright fringes.

What is the phase difference between two coherent sources?

A
Zero
B
Constant
C
Varies randomly
D
Depends on the amplitude