Questions (120)
Q1CDS2021
Where should an object be placed in front of a convex lens to get a real and enlarged image of the object?
- A At twice the focal length
- B At infinity
- C Between the principal focus and twice the focal length ✓
- D Beyond twice the focal length
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
Q2CDS2021
The magnetic field lines inside a current carrying long solenoid are in the form of
- A ellipse.
- B parabola.
- C hyperbola.
- D parallel straight lines. ✓
✓ Correct answer: (D)
Science & Technology › Physics & Chemistry
Q3CDS2021
A ray of light travelling from a rarer medium to a denser medium
- A slows down and bends away from the normal.
- B slows down and bends towards the normal. ✓
- C speeds up and bends away from the normal.
- D speeds up and bends towards the normal.
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
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