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Question (1)

QN00661

What is the main principle on which a pinhole camera works?

(A) Reflection of light
(B) Dispersion of light
(C) Rectilinear propagation of light
(D) Refraction of light

Correct Answer: C

Explanation:

A pinhole camera works because light travels in straight lines.

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Question (2)

QN00662

The image formed by a pinhole camera is usually

(A) erect and virtual
(B) inverted and real
(C) erect and real
(D) enlarged and virtual

Correct Answer: B

Explanation:

Pinhole cameras form real and inverted images.

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Question (3)

QN00663

Which part of a pinhole camera allows light to enter?

(A) Lens
(B) Mirror
(C) Screen
(D) Tiny hole

Correct Answer: D

Explanation:

Light enters through the tiny pinhole.

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Question (4)

QN00664

A pinhole camera forms an image because light

(A) bends around corners
(B) travels in straight lines
(C) stops at opaque surfaces
(D) moves in curved paths

Correct Answer: B

Explanation:

Straight-line travel of light forms the image.

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Question (5)

QN00665

Which of the following materials is best for making the body of a pinhole camera?

(A) Transparent glass
(B) Opaque cardboard
(C) Translucent plastic
(D) Thin cloth

Correct Answer: B

Explanation:

Opaque cardboard blocks unwanted light.

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Question (6)

QN00666

A student observes that the image in a pinhole camera appears upside down. This is because

(A) light reflects inside the box
(B) light rays cross at the pinhole
(C) the screen bends light
(D) the hole absorbs light

Correct Answer: B

Explanation:

Light rays cross at the pinhole and invert the image.

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Question (7)

QN00667

Which statement correctly defines a pinhole camera?

(A) A device using lenses to magnify objects
(B) A camera using a tiny hole to form images
(C) A mirror used for reflection
(D) A device producing coloured shadows

Correct Answer: B

Explanation:

A pinhole camera uses a small hole instead of a lens.

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Question (8)

QN00668

If the pinhole of a camera becomes larger, the image formed will usually become

(A) sharper and clearer
(B) brighter but less sharp
(C) invisible
(D) erect and virtual

Correct Answer: B

Explanation:

A larger hole allows more light but reduces sharpness.

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Question (9)

QN00669

Which type of image is formed on the screen of a pinhole camera?

(A) Virtual image
(B) Real image
(C) Magnified image only
(D) Reflection image

Correct Answer: B

Explanation:

The image formed can be obtained on a screen, so it is real.

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Question (10)

QN00670

A student makes a pinhole camera using a shoebox. Why should the inside of the box be dark?

(A) To absorb unwanted light
(B) To reflect more light
(C) To enlarge the image
(D) To change image colour

Correct Answer: A

Explanation:

Dark interiors reduce unwanted reflections.

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Question (1)

What is the main principle on which a pinhole camera works?

Explanation:

Link:

Question (2)

The image formed by a pinhole camera is usually

Explanation:

Link:

Question (3)

Which part of a pinhole camera allows light to enter?

Explanation:

Link:

Question (4)

A pinhole camera forms an image because light

Explanation:

Link:

Question (5)

Which of the following materials is best for making the body of a pinhole camera?

Explanation:

Link:

Question (6)

A student observes that the image in a pinhole camera appears upside down. This is because

Explanation:

Link:

Question (7)

Which statement correctly defines a pinhole camera?

Explanation:

Link:

Question (8)

If the pinhole of a camera becomes larger, the image formed will usually become

Explanation:

Link:

Question (9)

Which type of image is formed on the screen of a pinhole camera?

Explanation:

Link:

Question (10)

A student makes a pinhole camera using a shoebox. Why should the inside of the box be dark?

Explanation:

Link:

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