Default Title

Question (21)

QN00531

Which material is best for making the walls of a darkroom used for photography?

(A) Transparent plastic
(B) Frosted glass
(C) Thick black cloth
(D) Clear glass

Correct Answer: C

Explanation:

Thick black cloth blocks light completely.

Link:

Report Error

Question (22)

QN00532

A material that allows some light to pass but does not allow clear vision through it is called

(A) opaque
(B) luminous
(C) translucent
(D) reflective

Correct Answer: C

Explanation:

Translucent materials allow partial light passage.

Link:

Report Error

Question (23)

QN00533

A student notices that sunlight cannot pass through a steel lunchbox. The lunchbox is therefore

(A) transparent
(B) translucent
(C) opaque
(D) luminous

Correct Answer: C

Explanation:

Steel blocks light completely.

Link:

Report Error

Question (24)

QN00534

Which material is commonly used in bathroom windows to maintain privacy while allowing light inside?

(A) Clear glass
(B) Metal sheet
(C) Frosted glass
(D) Cardboard

Correct Answer: C

Explanation:

Frosted glass allows light but not clear images.

Link:

Report Error

Question (25)

QN00535

A transparent object placed in front of a torch produces

(A) no light spot on the screen
(B) a bright light spot
(C) complete darkness
(D) a coloured shadow only

Correct Answer: B

Explanation:

Most light passes through transparent objects.

Link:

Report Error

Question (26)

QN00536

Which of the following is an example of a translucent object?

(A) Air
(B) Clean water
(C) Oiled paper
(D) Mirror

Correct Answer: C

Explanation:

Oiled paper allows partial passage of light.

Link:

Report Error

Question (27)

QN00537

A student compares two materials. Material A allows full light passage, while Material B allows only some light. Material A is

(A) opaque
(B) translucent
(C) transparent
(D) luminous

Correct Answer: C

Explanation:

Transparent materials allow almost complete light passage.

Link:

Report Error

Question (28)

QN00538

Which material below is least suitable for making greenhouse roofs?

(A) Glass
(B) Transparent plastic
(C) Clear acrylic sheet
(D) Thick plywood

Correct Answer: D

Explanation:

Thick plywood blocks sunlight.

Link:

Report Error

Question (29)

QN00539

Which type of material forms the darkest shadow?

(A) Transparent
(B) Translucent
(C) Opaque
(D) Reflective

Correct Answer: C

Explanation:

Opaque materials block all light and form dark shadows.

Link:

Report Error

Question (30)

QN00540

During an experiment, a student observes that no light passes through a material. The material can be classified as

(A) transparent
(B) translucent
(C) opaque
(D) luminous

Correct Answer: C

Explanation:

Opaque materials do not allow light to pass through.

Link:

Report Error

Question (21)

Which material is best for making the walls of a darkroom used for photography?

Explanation:

Link:

Question (22)

A material that allows some light to pass but does not allow clear vision through it is called

Explanation:

Link:

Question (23)

A student notices that sunlight cannot pass through a steel lunchbox. The lunchbox is therefore

Explanation:

Link:

Question (24)

Which material is commonly used in bathroom windows to maintain privacy while allowing light inside?

Explanation:

Link:

Question (25)

A transparent object placed in front of a torch produces

Explanation:

Link:

Question (26)

Which of the following is an example of a translucent object?

Explanation:

Link:

Question (27)

A student compares two materials. Material A allows full light passage, while Material B allows only some light. Material A is

Explanation:

Link:

Question (28)

Which material below is least suitable for making greenhouse roofs?

Explanation:

Link:

Question (29)

Which type of material forms the darkest shadow?

Explanation:

Link:

Question (30)

During an experiment, a student observes that no light passes through a material. The material can be classified as

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY