Questions (120)
Q1CDS2023
A person can see near objects clearly through his eyes but cannot see distant objects clearly. The possible reason(s) for this defect could be
- Excessive curvature of the eye lens
- The eye-ball has become too small
- The focal length of the eye lens is too large
- Elongation of the eye-ball
Select the correct answer using the code given below :
- A 1 only
- B 2 and 4 only
- C 1 and 4 only ✓
- D 1 and 3 only
✓ Correct answer: (C)
Science & Technology › Physics & Chemistry
Q2CDS2023
Consider a journey by a car represented by the graph given below in three parts A, B and C. The speed of the car in these parts is va, vb and vc, respectively : Which one of the following is correct in this case ?
- A va < vb < vc
- B vb > va > vc ✓
- C va = vb = vc
- D va > vb ; va > vc
✓ Correct answer: (B)
Science & Technology › Physics & Chemistry
Q3CDS2023
A concave mirror of radius of curvature 50 cm is used to form an image of an object kept at a distance of 25 cm from the mirror on its principal axis. What will be the position of the image from the mirror ?
- A At infinity ✓
- B At 50 cm
- C At 25 cm
- D At 75 cm
✓ Correct answer: (A)
Science & Technology › Physics & Chemistry
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