11
What is the point of convergence or the point from which rays appear to be produced in the lens?
A)
center of curvature
B)
principal axis
C)
Pole
D)
Focus
Answer & Solution
Answer: Option
D
12
With a Concave mirror, when an object is placed at the Focus (F) which of the following applies for the image?
A)
Real, inverted, highly diminished image at F
B)
Real, inverted image of the same size at C
C)
Real, inverted, highly enlarged image at infinity
D)
Real, inverted, diminished image between C and F
Answer & Solution
Answer: Option
C
13
The human eye forms the image of an object at its . . . . . . . .
A)
cornea
B)
iris
C)
pupil
D)
retina
Answer & Solution
Answer: Option
D
14
Which one of the following statement is correct for a plane mirror?
A)
Its focal length is zero
B)
The size of the image of an object placed in front of the mirror is slightly less than that of the object
C)
The image is virtual, erect and laterally inverted
D)
Its focal length is 200 cm
Answer & Solution
Answer: Option
C
15
Why does water tank appear shallower when viewed from the top?
A)
Due to reflection
B)
Due to refraction
C)
Due to diffraction
D)
Due to total internal reflection
Answer & Solution
Answer: Option
B
16
Match the columns.
Column I Column II
a. Refraction of light
1. Sky appears blue
b. Scattering of light
2. Twinkling of star
c. Reflection of light
3. Mirage
d. Total internal reflection
4. Kaleidoscope
A)
a-2, b-4, c-3, d-1
B)
a-2, b-3, c-4, d-1
C)
a-2, b-1, c-4, d-3
D)
a-1, b-2, c-4, d-3
Answer & Solution
Answer: Option
C
17
Who was the first person to obtain a spectrum by passing light through a prism?
A)
Paul Villard
B)
Benjamin Franklin
C)
Isaac Newton
D)
Pierre Curie
Answer & Solution
Answer: Option
C
18
The bending of light rays in a medium is called-
A)
refraction
B)
diffusion
C)
reflection
D)
deflection
Answer & Solution
Answer: Option
A
19
The final image in a simple microscope is
A)
real, diminished and inverted
B)
real, magnified and erect
C)
virtual, magnified and erect
D)
virtual, diminished and erect
Answer & Solution
Answer: Option
C
20
Which of the following is used to split white light into different colours?
A)
Glass slab
B)
Convex lens
C)
Concave lens
D)
Prism
Answer & Solution
Answer: Option
D
