Physics-Light (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 1 - 3 of 11

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Question number: 1

» Physics » Light

Appeared in Year: 2013

MCQ▾

Question

A concave lens always gives a virtual image. In optical lenses worn by humans which of the following statements is true?

Choices

Choice (4) Response

a.

All focal length concave lenses are possible

b.

In some cases the lens can be concave if the focal length is much larger than 2.5 cm

c.

The lens can never be concave

d.

All focal length convex lenses are possible

Question number: 2

» Physics » Light

Appeared in Year: 2013

MCQ▾

Question

Which of the following ray diagram is correct?

Choices

Choice (4) Response

a.

Choice a is a ray diagram

Choice a Is a Ray Diagram

Rays produce from an object and travel through lens and reach to focal point of object

b.

Choice b is a ray diagram

Choice B Is a Ray Diagram

Rays produce from an object and travel through lens and reach to focal point of object

c.

Choice c is a ray diagram

Choice C Is a Ray Diagram

Rays produce from an object and travel through lens and reach to focal point of object

d.

Choice d is a ray diagram

Choice D Is a Ray Diagram

Rays produce from an object and travel through lens and reach to focal point of object

Question number: 3

» Physics » Light

MCQ▾

Question

Consider the following statements

I. Concave mirror forms virtual and enlarged image of a real object placed very near to it, so it is used by dentists to examine teeth.

II. Concave lens always form virtual image of smaller size of a real object and it is thinner in middle.

III. Plane mirror always forms virtual image of the same size of a real object.

IV. Convex mirror always forms virtual image of bigger size of a real object.

V. Convex lens forms real and diminished image of a real object placed near to it, so it is used as reading glass.

Which of the above statements is/are correct ?

Choices

Choice (4) Response

a.

I, II and III

b.

II and III

c.

IV and V

d.

All of the above

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