1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Find the value of the angle of emergence from the prism. Refractive index of the glass is $$\sqrt 3 $$

NEET 2021 Physics - Geometrical Optics Question 18 English
A
90$$^\circ$$
B
60$$^\circ$$
C
30$$^\circ$$
D
45$$^\circ$$
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A convex lens 'A' of focal length 20 cm and a concave lens 'B' of focal length 5 cm are kept along the same axis with a distance 'd' between them. If a parallel beam of light falling on 'A' leaves 'B' as a parallel beam, then the distance 'd' in cm will be :
A
30
B
25
C
15
D
50
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A lens of large focal length and large aperture is best suited as an objective of an astronomical telescope since :
A
a large aperture contributes to the quality and visibility of the images.
B
a large area of the objective ensures better light gathering power.
C
a large aperture provides a better resolution.
D
All the above.
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of 40 cm from it, the final image would be formed at a distance of -

NEET 2021 Physics - Geometrical Optics Question 16 English
A
20 cm from the plane mirror, it would be a virtual image.
B
20 cm from the lens, it would be a real image.
C
30 cm from the lens, it would be a real image.
D
30 cm from the plane mirror, it would be a virtual image.
NEET Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
CBSE
Class 12