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- Question
Find the power of a convex lens if the image formed is at a distance of 16 cm from the lens when the object is placed on the other side of the lens at 20 cm from the optical centre?
Options- A. -3.75 diopters
- B. -11.25 diopters
- C. 3.75 diopters
- D. 11.25 diopters
- Correct Answer
- 11.25 diopters
- 1. If price of an article decreases from Rs 240 to Rs 220, when quantity demanded increases from 200 units to 210 units. Find point elasticity of demand?
Options- A. 0.6
- B. -1.8
- C. -0.6
- D. 1.8 Discuss
- 2. Instrument for measuring blueness of the sky or ocean is called ___________.
Options- A. Bathymeter
- B. Ceraunograph
- C. Cyanometer
- D. Barometer Discuss
- 3. The property of metal by which it can be drawn into wires is called _____________.
Options- A. maleability
- B. viscosity
- C. ductility
- D. tensile strength Discuss
- 4. The force of friction between two surfaces will increase if:
Options- A. a layer of lubricant is kept between the two surfaces
- B. the two surfaces are pressed harder
- C. air gap is created between the two surfaces
- D. irregularities on both the surfaces are removed Discuss
- 5. In _____________ motion of a body its velocity varies with time.
Options- A. uniform
- B. linear
- C. equilibrium
- D. non-uniform Discuss
- 6. An image formed by a plane mirror, that cannot be obtained on a screen is called _______.
Options- A. Virtual image
- B. Real image
- C. Inverted image
- D. Erect image Discuss
- 7. The force exerted by a magnet is an example of _________.
Options- A. Non-contact force
- B. Muscular force
- C. Contact force
- D. Electrostatic force Discuss
- 8. For a body moving with uniform acceleration its final velocity equals _________________.
Options- A. average velocity - initial velocity
- B. 2 x average velocity - initial velocity
- C. 2 x average velocity + initial velocity
- D. average velocity + initial velocity Discuss
- 9. Find the acceleration (in m/s2) of a body which accelerates from 25 m/s to 30 m/s in 10 seconds
Options- A. 5.5
- B. 1
- C. 11
- D. 0.5 Discuss
- 10. During uniform motion of an object along a straight line, its ___________ remains constant with time
Options- A. acceleration
- B. deceleration
- C. force
- D. velocity Discuss
Physics problems
Search Results
Correct Answer: -0.6
Correct Answer: Cyanometer
Correct Answer: ductility
Correct Answer: the two surfaces are pressed harder
Correct Answer: non-uniform
Correct Answer: Virtual image
Correct Answer: Non-contact force
Correct Answer: 2 x average velocity - initial velocity
Correct Answer: 0.5
Correct Answer: velocity
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