Physics MCQs for NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc. Part 10
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Question:
In a compound microscope the object produces a magnification 10 and eyepiece produces a magnification 5. The overall magnification produced by the compound microscope is
- 2
- 5
- 2
- 50
Question:
The colour of the sky is due to
- Scattering of light
- Refraction of light
- Interference of light
- Reflection of light
Question:
An object is placed at a distance f12 from a convex lens of focal length f. The image will be at
- , real and inverted
- One of the foci, virtual, double the size of the object
- , real and inverted
- , virtual and erect
Question:
Two thin convex lenses of focal length are combined to gather, the focal length of the combination is
Question:
The focal length of a convex lens is minimum for
- Red
- Violet
- Blue
- Green
Question:
A biconvex lens of focal length is cut out into two Plano-convex lenses. The focal length of each part is
- 10cm
- 20cm
- 30cm
- 40cm
Question:
The minimum distance between the object and its real image formed by a convex lens of focal length f is
Question:
The refractive index of prism depends on
- Angle of the prism
- Deviation produced by the prism
- Intensity of light
- Wave length of light