Default Title

Question (11)

QN0028966

Which statement correctly compares concave and convex mirrors?

(A) Both always form enlarged images
(B) Both always form inverted images
(C) Concave converges light; convex diverges light
(D) Concave diverges light; convex converges light

Correct Answer: C

Explanation:

Concave mirrors converge light while convex mirrors diverge light.

Link:

Report Error

Question (12)

QN0028967

A water drop on a transparent sheet makes printed letters appear larger. The water drop behaves like a:

(A) Plane mirror
(B) Convex lens
(C) Concave mirror
(D) Convex mirror

Correct Answer: B

Explanation:

A water drop acts like a convex lens and magnifies nearby objects.

Link:

Report Error

Question (13)

QN0028968

A student views a coin through a convex lens. Initially the coin appears enlarged and erect. When the coin is moved farther away, it appears:

(A) Inverted
(B) Invisible
(C) Always enlarged
(D) Always erect

Correct Answer: A

Explanation:

A convex lens can form an inverted image when the object is moved sufficiently far away.

Link:

Report Error

Question (14)

QN0028969

Which lens always forms an erect and diminished image?

(A) Convex lens
(B) Plane glass plate
(C) Concave lens
(D) Water drop

Correct Answer: C

Explanation:

A concave lens always forms an erect diminished image.

Link:

Report Error

Question (15)

QN0028970

Three parallel light rays pass through a lens and spread apart after emerging. The lens is:

(A) Convex
(B) Concave
(C) Plane glass
(D) Concave mirror

Correct Answer: B

Explanation:

A concave lens diverges parallel light rays.

Link:

Report Error

Question (16)

QN0028971

A convex lens and a concave mirror are both used with sunlight. What common property makes them useful for burning paper?

(A) They form same-size images
(B) They absorb sunlight
(C) They converge light into a small region
(D) They always form inverted images

Correct Answer: C

Explanation:

Both converge sunlight and concentrate heat at a small spot.

Link:

Report Error

Question (17)

QN0028972

A student places a toy successively behind a convex lens and a concave lens. The toy appears smaller in both cases. Which conclusion is correct?

(A) The toy is far from the convex lens
(B) The toy is close to the convex lens
(C) The concave lens produced an enlarged image
(D) Both lenses always enlarge objects

Correct Answer: A

Explanation:

A convex lens forms a diminished image when the object is far away, while a concave lens always gives a diminished image.

Link:

Report Error

Question (18)

QN0028973

Which of the following correctly describes the second law of reflection?

(A) Incident and reflected rays are equal in length
(B) Incident ray, reflected ray and normal lie in the same plane
(C) Incident ray is perpendicular to reflected ray
(D) Reflection occurs only on smooth surfaces

Correct Answer: B

Explanation:

The incident ray, reflected ray and normal all lie in the same plane.

Link:

Report Error

Question (19)

QN0028974

A scientist wants a device that concentrates sunlight for heating and energy production. Which combination would be suitable?

(A) Convex mirror and concave lens
(B) Plane mirror and plane glass
(C) Concave mirror and convex lens
(D) Convex mirror and convex mirror

Correct Answer: C

Explanation:

Both concave mirrors and convex lenses converge light and can concentrate sunlight.

Link:

Report Error

Question (20)

QN0028975

Four statements are given: A. Convex mirror always forms an erect image. B. Concave lens always forms a diminished image. C. Convex lens always forms an enlarged image. D. Concave mirror can form an inverted image. Which statements are correct?

(A) A, B and D only
(B) A and C only
(C) B and C only
(D) A, B, C and D

Correct Answer: A

Explanation:

Statements A, B and D are correct. A convex lens may form enlarged, same-sized or diminished images depending on object distance.

Link:

Report Error

Question (11)

Which statement correctly compares concave and convex mirrors?

Explanation:

Link:

Question (12)

A water drop on a transparent sheet makes printed letters appear larger. The water drop behaves like a:

Explanation:

Link:

Question (13)

A student views a coin through a convex lens. Initially the coin appears enlarged and erect. When the coin is moved farther away, it appears:

Explanation:

Link:

Question (14)

Which lens always forms an erect and diminished image?

Explanation:

Link:

Question (15)

Three parallel light rays pass through a lens and spread apart after emerging. The lens is:

Explanation:

Link:

Question (16)

A convex lens and a concave mirror are both used with sunlight. What common property makes them useful for burning paper?

Explanation:

Link:

Question (17)

A student places a toy successively behind a convex lens and a concave lens. The toy appears smaller in both cases. Which conclusion is correct?

Explanation:

Link:

Question (18)

Which of the following correctly describes the second law of reflection?

Explanation:

Link:

Question (19)

A scientist wants a device that concentrates sunlight for heating and energy production. Which combination would be suitable?

Explanation:

Link:

Question (20)

Four statements are given: A. Convex mirror always forms an erect image. B. Concave lens always forms a diminished image. C. Convex lens always forms an enlarged image. D. Concave mirror can form an inverted image. Which statements are correct?

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY