The angle of deviation of light of various colours passing through a triangular prism increases in the order
red → green → blue
green → violet → blue
blue → red → green
blue → green → red
Correct answer is A
No explanation has been provided for this answer.
If the linear magnification of the objective and eyepiece convex lenses of a compound microscope are 4 and 7 respectively. Calculate the angular magnification of the microscope
2
3
11
28
Correct answer is D
M = M1 x M2 = 4 x 7 = 28
Total internal reflection will not occur when light travels from
water to air
water into glass
glass to air
glass into water
Correct answer is B
A ray of light passing through the centre of curvature of a concave mirror is reflected by the mirror at?
0o
45o
90o
180o
A man 1.5m tall is standing 3m in front of a pinhole camera whose distance between the hole and the screen is 0.1m. What is the height of the image of the man on the screen?
0.05m
0.15m
0.30m
1.00m
hi=ho×Vu hi=1.5×0.13 = 0.05m
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