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Published on: 04/10/2022
QB365 provides a detailed and simple solution for every Possible Book Back Questions in Class 10th Science Subject - Optics, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
If VB, VG, VR be the velocity of blue, green and red light respectively in a glass prism, then which of the following statement gives the correct relation?
VB = VG = VR
VB > VG >VR
VB < VG < VR
VB < VG > VR
2.
Which of the following lens would you prefer to use while reading small letters found in a dictionary?
A convex lens of focal length 5 cm
A concave lens of focal length 5 cm
A convex lens of focal length 10 cm
A concave lens of focal length 10 cm
3.
4.
In a myopic eye, the image of the object is formed
behind the retina
on the retina
in front of the retina
on the blind spot
5.
Power of a lens is –4D, then its focal length is
4m
–40m
–0.25 m
–2.5 m
6.
A convex lens forms a real, diminished point sized image at focus. Then the position of the object is at
focus
infinity
at 2f
between f and 2f
7.
Magnification of a convex lens is
Positive
negative
either positive or negative
zero
8.
A small bulb is placed at the principal focus of a convex lens. When the bulb is switched on, the lens will produce
a convergent beam of light
a divergent beam of light
a parallel beam of light
a coloured beam of light
9.
Where should an object be placed so that a real and inverted image of same size is obtained by a convex lens
f
2f
infinity
between f and 2f
10.
The refractive index of four substances A, B, C and D are 1.31, 1.43, 1.33, 2.4 respectively. The speed of light is maximum in
A
B
C
D
1.
(c)
VB < VG < VR
2.
(a)
A convex lens of focal length 5 cm
3.
(d)
4.
(c)
in front of the retina
5.
(c)
–0.25 m
6.
(b)
infinity
7.
(c)
either positive or negative
8.
(c)
a parallel beam of light
9.
(b)
2f
10.
(a)
A
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
