MCQOPTIONS
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MCQOPTIONS
This section includes 1341 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 801. |
In front of the driver of the motor car? |
| A. | concave mirror |
| B. | plane mirror |
| C. | Convex mirror |
| D. | other |
| Answer» D. other | |
| 802. |
Solar cookers are used in? |
| A. | concave mirror |
| B. | Convex mirror |
| C. | plane mirror |
| D. | none of these |
| Answer» B. Convex mirror | |
| 803. |
A wooden swing is swinging in a sitting position, what is the period of oscillations when the girl stands up? |
| A. | will decrease |
| B. | will remain unchanged |
| C. | will be more |
| D. | none of these |
| Answer» B. will remain unchanged | |
| 804. |
What if the velocity of an object is doubled? |
| A. | the momentum doubles |
| B. | kinetic energy becomes four times |
| C. | both of the above |
| D. | none of these |
| Answer» D. none of these | |
| 805. |
To examine the nose, ears, throat etc. of patients, doctors use? |
| A. | plane mirror |
| B. | Convex mirror |
| C. | concave mirror |
| D. | none of these |
| Answer» D. none of these | |
| 806. |
The width of the mirror is called that of the mirror? |
| A. | focus |
| B. | Pole |
| C. | Dwarak |
| D. | none of these |
| Answer» D. none of these | |
| 807. |
A stick inserted in water looks crooked. this is due to ? |
| A. | reflection |
| B. | refraction |
| C. | reflection and refraction |
| D. | none of these |
| Answer» C. reflection and refraction | |
| 808. |
What is the power of a convex lens? |
| A. | negative |
| B. | positive |
| C. | Zero |
| D. | other |
| Answer» C. Zero | |
| 809. |
Which of the following materials cannot be used for lenses? |
| A. | water |
| B. | Soil |
| C. | plastic |
| D. | glass |
| Answer» C. plastic | |
| 810. |
If we move from the equator to the poles, then what is the value of g? |
| A. | grows |
| B. | remains the same |
| C. | decreases |
| D. | none of these |
| Answer» B. remains the same | |
| 811. |
S of lens power |
| A. | meter |
| B. | (meter) |
| C. | diopter |
| D. | other |
| Answer» D. other | |
| 812. |
The depth of a bucket full of water is less visible. this is due to ? |
| A. | total internal reflection |
| B. | refraction |
| C. | reflection |
| D. | none of these |
| Answer» C. reflection | |
| 813. |
A person climbing a hill leans forward because |
| A. | be able to walk fast |
| B. | to increase durability |
| C. | to conserve power |
| D. | reduce the chance of slipping |
| Answer» C. to conserve power | |
| 814. |
Which of the following pairs of physical quantities do not have the same dimensional formula? |
| A. | force and pressure |
| B. | load and force |
| C. | impulse and momentum |
| D. | work and energy |
| Answer» B. load and force | |
| 815. |
Cyclotron is used to accelerate |
| A. | nuclear |
| B. | ion |
| C. | proton |
| D. | all these |
| Answer» B. ion | |
| 816. |
of objects falling freely in the void? |
| A. | have the same velocity |
| B. | have the same force |
| C. | have the same speed |
| D. | have the same acceleration |
| Answer» E. | |
| 817. |
Force is the product? |
| A. | of mass and velocity |
| B. | load and acceleration |
| C. | mass and acceleration |
| D. | of weight and velocity |
| Answer» D. of weight and velocity | |
| 818. |
When a ship moving in a river comes into the sea, what is the level of the ship? |
| A. | as before |
| B. | will come down a bit |
| C. | will come up a bit |
| D. | none of these |
| Answer» D. none of these | |
| 819. |
Ice is floating on water in a beaker, when the ice melts completely, what will be the water level in the beaker? |
| A. | will grow |
| B. | will increase first then decrease |
| C. | will decrease |
| D. | will remain the same |
| Answer» E. | |
| 820. |
Which of the following device converts alternating current into direct current? |
| A. | alternator |
| B. | Condenser |
| C. | transformer |
| D. | none of these |
| Answer» B. Condenser | |
| 821. |
What is the instrument by which sound waves are used to measure the depth of the oceans? |
| A. | Sonar |
| B. | altimeter |
| C. | radar |
| D. | none of these |
| Answer» B. altimeter | |
| 822. |
How many calories are in a joule? |
| A. | 0.25 |
| B. | 0.41 |
| C. | 0.24 |
| D. | 0.76 |
| Answer» D. 0.76 | |
| 823. |
When a bottle is filled with water and allowed to freeze, the bottle breaks because? |
| A. | Bottle shrinks at freezing point |
| B. | water expands on heating |
| C. | The outside temperature of the bottle is higher than the inside |
| D. | water expands when it freezes |
| Answer» E. | |
| 824. |
Who is considered the inventor of the laws of gravity? |
| A. | newton |
| B. | niels bore |
| C. | rutherford |
| D. | J. L. Weird |
| Answer» B. niels bore | |
| 825. |
What is Silicon? |
| A. | insulator |
| B. | conductor |
| C. | semiconductor |
| D. | none of these |
| Answer» D. none of these | |
| 826. |
Who is considered the inventor of the microphone? |
| A. | Stephen Hawking |
| B. | galileo |
| C. | Graham Bell |
| D. | none of these |
| Answer» D. none of these | |
| 827. |
What is the Coolidge tube used to produce? |
| A. | micro waves |
| B. | Radio waves |
| C. | x rays |
| D. | none of these |
| Answer» D. none of these | |
| 828. |
Who is considered the inventor of the telescope? |
| A. | Johnson |
| B. | rutherford |
| C. | galileo |
| D. | newton |
| Answer» D. newton | |
| 829. |
What cannot X-rays pass through? |
| A. | skin |
| B. | bone |
| C. | Meat |
| D. | wood |
| Answer» C. Meat | |
| 830. |
How is heavy water used in a nuclear reactor? |
| A. | coolant |
| B. | controller |
| C. | diluent |
| D. | preservative |
| Answer» D. preservative | |
| 831. |
Which metal is commonly used to make electromagnets? |
| A. | copper |
| B. | cobalt |
| C. | iron |
| D. | none of these |
| Answer» D. none of these | |
| 832. |
What is used in the fabrication of transistors? |
| A. | silicone |
| B. | Silver |
| C. | Aluminum |
| D. | copper |
| Answer» B. Silver | |
| 833. |
Which of the following metals is used as a semiconductor in transistors? |
| A. | silver |
| B. | graphite |
| C. | germanium |
| D. | all these |
| Answer» D. all these | |
| 834. |
Which of the following substances is magnetic? |
| A. | Nickel |
| B. | Aluminum |
| C. | bismuth |
| D. | all these |
| Answer» B. Aluminum | |
| 835. |
According to which principle does the electric motor work? |
| A. | rules of OM |
| B. | Lenz's law |
| C. | Faraday's law |
| D. | none of these |
| Answer» D. none of these | |
| 836. |
Who discovered the positron? |
| A. | chadwick |
| B. | anderson |
| C. | newton |
| D. | galileo |
| Answer» C. newton | |
| 837. |
Who was the inventor of radar? |
| A. | Fleming |
| B. | Robert Watson |
| C. | Austin |
| D. | newton |
| Answer» C. Austin | |
| 838. |
Which way does the magnetic needle point? |
| A. | answer |
| B. | Sky |
| C. | East |
| D. | none of these |
| Answer» B. Sky | |
| 839. |
The angle between the magnetic meridian and the geographic meridian is called? |
| A. | magnetic moment |
| B. | magnetic field |
| C. | magnetic lamp |
| D. | none of these |
| Answer» D. none of these | |
| 840. |
Who introduced the fourth dimension in physics? |
| A. | newton |
| B. | niels bore |
| C. | einstein |
| D. | none of these |
| Answer» D. none of these | |
| 841. |
Which of the following is electromagnetic? |
| A. | cobalt |
| B. | Chromium |
| C. | copper |
| D. | Nickel |
| Answer» D. Nickel | |
| 842. |
What is the instrument used to change the speed of an electric fan? |
| A. | switch |
| B. | Rectifier |
| C. | regulator |
| D. | other |
| Answer» D. other | |
| 843. |
Faraday's law is related to which process? |
| A. | gas pressure |
| B. | gas reaction |
| C. | temperature and pressure |
| D. | electrolysis |
| Answer» E. | |
| 844. |
Permanent magnets are made from? |
| A. | of copper |
| B. | of steel |
| C. | soft iron |
| D. | all these |
| Answer» C. soft iron | |
| 845. |
Which one of the following is paramagnetic in nature? |
| A. | hydrogen |
| B. | oxygen |
| C. | nitrogen |
| D. | iron |
| Answer» C. nitrogen | |
| 846. |
What is the energy stored in a dry cell? |
| A. | thermal energy |
| B. | chemical energy |
| C. | electrical energy |
| D. | none of these |
| Answer» C. electrical energy | |
| 847. |
What is a device that converts alternating current into direct current called? |
| A. | rectifier |
| B. | transformer |
| C. | Transmitter |
| D. | none of these |
| Answer» B. transformer | |
| 848. |
What is the unit of magnetic field? |
| A. | weber |
| B. | Domain |
| C. | Gauss |
| D. | henry |
| Answer» D. henry | |
| 849. |
The semiconductor chip used in integrated circuits is made up of? |
| A. | silicone |
| B. | zircon |
| C. | Carbon |
| D. | none of these |
| Answer» B. zircon | |
| 850. |
Which metal is used to generate electricity? |
| A. | iron |
| B. | uranium |
| C. | copper |
| D. | all these |
| Answer» C. copper | |