![Construct ∆ PQR if PQ = 5 cm, m ∠PQR = 105° and m ∠QRP = 40° - CBSE Class 7 Maths - Learn CBSE Forum Construct ∆ PQR if PQ = 5 cm, m ∠PQR = 105° and m ∠QRP = 40° - CBSE Class 7 Maths - Learn CBSE Forum](https://ask.learncbse.in/uploads/db3785/original/3X/8/e/8ed6c8a8cb1eda712c3b5ccb6123dac66ed61ba2.png)
Construct ∆ PQR if PQ = 5 cm, m ∠PQR = 105° and m ∠QRP = 40° - CBSE Class 7 Maths - Learn CBSE Forum
The radius of curvature of a concave mirror is 40 cm. Find position of an object in front of the mirror, so that its real image is two times the size of
![A sound wave of wave length 40 em travels in air. If the difference between the maximum and minimum pressures at a given point is 2.0 × 10^-3 N/m^2 . The amplitude A sound wave of wave length 40 em travels in air. If the difference between the maximum and minimum pressures at a given point is 2.0 × 10^-3 N/m^2 . The amplitude](https://dwes9vv9u0550.cloudfront.net/images/3260620/5e132f18-21bf-44f4-a3a4-e39560ee9a73.jpg)
A sound wave of wave length 40 em travels in air. If the difference between the maximum and minimum pressures at a given point is 2.0 × 10^-3 N/m^2 . The amplitude
![A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 40 cm mark. A mass of 2 kg is suspended from the rod at A uniform rod of length 200 cm and mass 500 g is balanced on a wedge placed at 40 cm mark. A mass of 2 kg is suspended from the rod at](https://grdp.co/cdn-cgi/image/width=500,height=500,quality=50,f=auto/https://gs-post-images.grdp.co/2022/8/a-uniform-rod-of-length-200-cm-and-mass-500-g-img1660730501873-60.png-rs-high-webp.png)