NDA General Ability 10 April 2022 | Physics Question 354 | General Science

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NDA General Ability 10 April 2022

MCQ (Single Correct Answer)

-1.33

A boy of mass 52 kg jumps with a horizontal velocity of 2 m/s onto a stationary cart of mass 3 kg. The cart is fixed with frictionless wheels. Which one of the following would be the speed of the cart?

2.15 m/s

1.89 m/s

1.51 m/s

2.51 m/s

NDA General Ability 10 April 2022

MCQ (Single Correct Answer)

-1.33

The energy possessed by a body due to its change in position or shape is called

thermal energy

potential energy

kinetic energy

electric energy

NDA General Ability 10 April 2022

MCQ (Single Correct Answer)

-1.33

A sound wave has a frequency of 1 kHz and wavelength 50 cm. How long will it take to travel 1 km?

5 s

4 s

3 s

2 s

NDA General Ability 10 April 2022

MCQ (Single Correct Answer)

-1.33

What is the mass of a material, whose specific heat capacity is 400 J/(kg °C) for a rise in temperature from 15°C to 25°C, when heat received is 20 kJ ?

0.1 kg

1 kg

10 kg

5 kg

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